viridis_scales.tcl

#!/usr/bin/env tclsh
##
##  Makes perceptually uniform and colorblind accessible color scales
##  available in VMD
##
##
##  Certain colors are indistinguishable to people with the various forms of
##  color blindness, and therefore are better not used in figures intended for
##  public viewing. This script provides additional color scales to allow for
##  an alternative to the default rainbow coloring that is unambiguous both to
##  colorblind and non-colorblind people.
##
##  The default color scale is changed to Turbo and the following procedures
##  defined: `inferno_scale`, `magma_scale`, `plasma_scale`, `viridis_scale`,
##  `cividis_scale`, `turbo_scale`. Call the procedure that corresponds to the
##  scale you intend to use.
##
##  Color scale details:
##    - viridis, magma, inferno, plasma: Stéfan van der Walt, Nathaniel Smith,
##      & Eric Firing. https://bids.github.io/colormap
##    - cividis: Jamie Nuñez, Christopher Anderton, Ryan Renslow.
##        https://doi.org/10.1371/journal.pone.0199239
##    - turbo: Anton Mikhailov.
##        https://ai.googleblog.com/2019/08/turbo-improved-rainbow-colormap-for.html
##
##  Here each color scale is represented as 256 RGB values. These are then expanded to
##  1024 (as necessary for vmd) by linear interpolation. The following scripts from John
##  Stone are useful reference:
##  https://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/att-12719/colorscale.tcl
##  https://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/att-29771/matlab_colorscale.tcl
##
##  For further detail/future revisions, visit https://shyam.saladi.org/vmd_viridis
## 
##
##  Author: Shyam Saladi
##  Date: Nov 2019
##  License: MIT
##
##  Palette RGB values are taken from bokeh.palettes
##  Corresponding copyright notices can be found here:
##  https://github.com/bokeh/bokeh/blob/b19f2c5/bokeh/palettes.py
##
## 

# Linear interpolation (use _ avoid 'polluting' the namespace)
proc _lerpcolor { col1 col2 alpha } {
  set dc [vecsub $col2 $col1]
  set nc [vecadd $col1 [vecscale $dc $alpha]]
  return $nc
}

# Converts a hex color string `#NNNNNN` to fractional rgb values
proc _hextofrac { col } {
  scan $col "#%2x%2x%2x" r g b
  set r [expr $r / 255.]
  set g [expr $g / 255.]
  set b [expr $b / 255.]
  return [list $r $g $b]
}

proc set_color_scale { colors } {
  # display update off

  set mincolorid [expr [colorinfo num] - 1]
  set maxcolorid [expr [colorinfo max] - 1]
  set colrange [expr $maxcolorid - $mincolorid]

  set n_cols [llength $colors]

  for {set i $mincolorid} {$i < $maxcolorid} {incr i} {
    set colpcnt [expr ($i - $mincolorid) / double($colrange)]

    set colidx [expr $colpcnt * $n_cols]
    set frac [expr $colidx - {floor($colidx)}]
    set colidx [expr {int($colidx)}]
    
    set colorA [_hextofrac [lindex $colors $colidx]]
    set nextidx [expr $colidx + 1]

    # Handle when we're at the last color of `colors`
    if {$nextidx < $n_cols} {
      set colorB [_hextofrac [lindex $colors $nextidx]]
    } else {
      set colorB $colorA
    }

    set colorC [_lerpcolor $colorA $colorB $frac]
    foreach {r g b} $colorC {}

    # For debugging/inspection:
    # puts "index: $i $r $g $b   -- $colpcnt $colidx $frac"

    display update ui
    color change rgb $i $r $g $b
  }

  display update on
}

#
# HEX values are from bokeh.palettes
# https://github.com/bokeh/bokeh/blob/b19f2c5547024bdc288d02e73fdb65e65991df5f/bokeh/palettes.py
#
set new_color_scales [dict create \
  inferno { 
    "#000003" "#000004" "#000006" "#010007" "#010109" "#01010B" "#02010E" "#020210" "#030212" "#040314" "#040316" "#050418"
    "#06041B" "#07051D" "#08061F" "#090621" "#0A0723" "#0B0726" "#0D0828" "#0E082A" "#0F092D" "#10092F" "#120A32" "#130A34"
    "#140B36" "#160B39" "#170B3B" "#190B3E" "#1A0B40" "#1C0C43" "#1D0C45" "#1F0C47" "#200C4A" "#220B4C" "#240B4E" "#260B50"
    "#270B52" "#290B54" "#2B0A56" "#2D0A58" "#2E0A5A" "#300A5C" "#32095D" "#34095F" "#350960" "#370961" "#390962" "#3B0964"
    "#3C0965" "#3E0966" "#400966" "#410967" "#430A68" "#450A69" "#460A69" "#480B6A" "#4A0B6A" "#4B0C6B" "#4D0C6B" "#4F0D6C"
    "#500D6C" "#520E6C" "#530E6D" "#550F6D" "#570F6D" "#58106D" "#5A116D" "#5B116E" "#5D126E" "#5F126E" "#60136E" "#62146E"
    "#63146E" "#65156E" "#66156E" "#68166E" "#6A176E" "#6B176E" "#6D186E" "#6E186E" "#70196E" "#72196D" "#731A6D" "#751B6D"
    "#761B6D" "#781C6D" "#7A1C6D" "#7B1D6C" "#7D1D6C" "#7E1E6C" "#801F6B" "#811F6B" "#83206B" "#85206A" "#86216A" "#88216A"
    "#892269" "#8B2269" "#8D2369" "#8E2468" "#902468" "#912567" "#932567" "#952666" "#962666" "#982765" "#992864" "#9B2864"
    "#9C2963" "#9E2963" "#A02A62" "#A12B61" "#A32B61" "#A42C60" "#A62C5F" "#A72D5F" "#A92E5E" "#AB2E5D" "#AC2F5C" "#AE305B"
    "#AF315B" "#B1315A" "#B23259" "#B43358" "#B53357" "#B73456" "#B83556" "#BA3655" "#BB3754" "#BD3753" "#BE3852" "#BF3951"
    "#C13A50" "#C23B4F" "#C43C4E" "#C53D4D" "#C73E4C" "#C83E4B" "#C93F4A" "#CB4049" "#CC4148" "#CD4247" "#CF4446" "#D04544"
    "#D14643" "#D24742" "#D44841" "#D54940" "#D64A3F" "#D74B3E" "#D94D3D" "#DA4E3B" "#DB4F3A" "#DC5039" "#DD5238" "#DE5337"
    "#DF5436" "#E05634" "#E25733" "#E35832" "#E45A31" "#E55B30" "#E65C2E" "#E65E2D" "#E75F2C" "#E8612B" "#E9622A" "#EA6428"
    "#EB6527" "#EC6726" "#ED6825" "#ED6A23" "#EE6C22" "#EF6D21" "#F06F1F" "#F0701E" "#F1721D" "#F2741C" "#F2751A" "#F37719"
    "#F37918" "#F47A16" "#F57C15" "#F57E14" "#F68012" "#F68111" "#F78310" "#F7850E" "#F8870D" "#F8880C" "#F88A0B" "#F98C09"
    "#F98E08" "#F99008" "#FA9107" "#FA9306" "#FA9506" "#FA9706" "#FB9906" "#FB9B06" "#FB9D06" "#FB9E07" "#FBA007" "#FBA208"
    "#FBA40A" "#FBA60B" "#FBA80D" "#FBAA0E" "#FBAC10" "#FBAE12" "#FBB014" "#FBB116" "#FBB318" "#FBB51A" "#FBB71C" "#FBB91E"
    "#FABB21" "#FABD23" "#FABF25" "#FAC128" "#F9C32A" "#F9C52C" "#F9C72F" "#F8C931" "#F8CB34" "#F8CD37" "#F7CF3A" "#F7D13C"
    "#F6D33F" "#F6D542" "#F5D745" "#F5D948" "#F4DB4B" "#F4DC4F" "#F3DE52" "#F3E056" "#F3E259" "#F2E45D" "#F2E660" "#F1E864"
    "#F1E968" "#F1EB6C" "#F1ED70" "#F1EE74" "#F1F079" "#F1F27D" "#F2F381" "#F2F485" "#F3F689" "#F4F78D" "#F5F891" "#F6FA95"
    "#F7FB99" "#F9FC9D" "#FAFDA0" "#FCFEA4"
  } \
  magma {
    "#000003" "#000004" "#000006" "#010007" "#010109" "#01010B" "#02020D" "#02020F" "#030311" "#040313" "#040415" "#050417"
    "#060519" "#07051B" "#08061D" "#09071F" "#0A0722" "#0B0824" "#0C0926" "#0D0A28" "#0E0A2A" "#0F0B2C" "#100C2F" "#110C31"
    "#120D33" "#140D35" "#150E38" "#160E3A" "#170F3C" "#180F3F" "#1A1041" "#1B1044" "#1C1046" "#1E1049" "#1F114B" "#20114D"
    "#221150" "#231152" "#251155" "#261157" "#281159" "#2A115C" "#2B115E" "#2D1060" "#2F1062" "#301065" "#321067" "#341068"
    "#350F6A" "#370F6C" "#390F6E" "#3B0F6F" "#3C0F71" "#3E0F72" "#400F73" "#420F74" "#430F75" "#450F76" "#470F77" "#481078"
    "#4A1079" "#4B1079" "#4D117A" "#4F117B" "#50127B" "#52127C" "#53137C" "#55137D" "#57147D" "#58157E" "#5A157E" "#5B167E"
    "#5D177E" "#5E177F" "#60187F" "#61187F" "#63197F" "#651A80" "#661A80" "#681B80" "#691C80" "#6B1C80" "#6C1D80" "#6E1E81"
    "#6F1E81" "#711F81" "#731F81" "#742081" "#762181" "#772181" "#792281" "#7A2281" "#7C2381" "#7E2481" "#7F2481" "#812581"
    "#822581" "#842681" "#852681" "#872781" "#892881" "#8A2881" "#8C2980" "#8D2980" "#8F2A80" "#912A80" "#922B80" "#942B80"
    "#952C80" "#972C7F" "#992D7F" "#9A2D7F" "#9C2E7F" "#9E2E7E" "#9F2F7E" "#A12F7E" "#A3307E" "#A4307D" "#A6317D" "#A7317D"
    "#A9327C" "#AB337C" "#AC337B" "#AE347B" "#B0347B" "#B1357A" "#B3357A" "#B53679" "#B63679" "#B83778" "#B93778" "#BB3877"
    "#BD3977" "#BE3976" "#C03A75" "#C23A75" "#C33B74" "#C53C74" "#C63C73" "#C83D72" "#CA3E72" "#CB3E71" "#CD3F70" "#CE4070"
    "#D0416F" "#D1426E" "#D3426D" "#D4436D" "#D6446C" "#D7456B" "#D9466A" "#DA4769" "#DC4869" "#DD4968" "#DE4A67" "#E04B66"
    "#E14C66" "#E24D65" "#E44E64" "#E55063" "#E65162" "#E75262" "#E85461" "#EA5560" "#EB5660" "#EC585F" "#ED595F" "#EE5B5E"
    "#EE5D5D" "#EF5E5D" "#F0605D" "#F1615C" "#F2635C" "#F3655C" "#F3675B" "#F4685B" "#F56A5B" "#F56C5B" "#F66E5B" "#F6705B"
    "#F7715B" "#F7735C" "#F8755C" "#F8775C" "#F9795C" "#F97B5D" "#F97D5D" "#FA7F5E" "#FA805E" "#FA825F" "#FB8460" "#FB8660"
    "#FB8861" "#FB8A62" "#FC8C63" "#FC8E63" "#FC9064" "#FC9265" "#FC9366" "#FD9567" "#FD9768" "#FD9969" "#FD9B6A" "#FD9D6B"
    "#FD9F6C" "#FDA16E" "#FDA26F" "#FDA470" "#FEA671" "#FEA873" "#FEAA74" "#FEAC75" "#FEAE76" "#FEAF78" "#FEB179" "#FEB37B"
    "#FEB57C" "#FEB77D" "#FEB97F" "#FEBB80" "#FEBC82" "#FEBE83" "#FEC085" "#FEC286" "#FEC488" "#FEC689" "#FEC78B" "#FEC98D"
    "#FECB8E" "#FDCD90" "#FDCF92" "#FDD193" "#FDD295" "#FDD497" "#FDD698" "#FDD89A" "#FDDA9C" "#FDDC9D" "#FDDD9F" "#FDDFA1"
    "#FDE1A3" "#FCE3A5" "#FCE5A6" "#FCE6A8" "#FCE8AA" "#FCEAAC" "#FCECAE" "#FCEEB0" "#FCF0B1" "#FCF1B3" "#FCF3B5" "#FCF5B7"
    "#FBF7B9" "#FBF9BB" "#FBFABD" "#FBFCBF"
  } \
  plasma {
    "#0C0786" "#100787" "#130689" "#15068A" "#18068B" "#1B068C" "#1D068D" "#1F058E" "#21058F" "#230590" "#250591" "#270592"
    "#290593" "#2B0594" "#2D0494" "#2F0495" "#310496" "#330497" "#340498" "#360498" "#380499" "#3A049A" "#3B039A" "#3D039B"
    "#3F039C" "#40039C" "#42039D" "#44039E" "#45039E" "#47029F" "#49029F" "#4A02A0" "#4C02A1" "#4E02A1" "#4F02A2" "#5101A2"
    "#5201A3" "#5401A3" "#5601A3" "#5701A4" "#5901A4" "#5A00A5" "#5C00A5" "#5E00A5" "#5F00A6" "#6100A6" "#6200A6" "#6400A7"
    "#6500A7" "#6700A7" "#6800A7" "#6A00A7" "#6C00A8" "#6D00A8" "#6F00A8" "#7000A8" "#7200A8" "#7300A8" "#7500A8" "#7601A8"
    "#7801A8" "#7901A8" "#7B02A8" "#7C02A7" "#7E03A7" "#7F03A7" "#8104A7" "#8204A7" "#8405A6" "#8506A6" "#8607A6" "#8807A5"
    "#8908A5" "#8B09A4" "#8C0AA4" "#8E0CA4" "#8F0DA3" "#900EA3" "#920FA2" "#9310A1" "#9511A1" "#9612A0" "#9713A0" "#99149F"
    "#9A159E" "#9B179E" "#9D189D" "#9E199C" "#9F1A9B" "#A01B9B" "#A21C9A" "#A31D99" "#A41E98" "#A51F97" "#A72197" "#A82296"
    "#A92395" "#AA2494" "#AC2593" "#AD2692" "#AE2791" "#AF2890" "#B02A8F" "#B12B8F" "#B22C8E" "#B42D8D" "#B52E8C" "#B62F8B"
    "#B7308A" "#B83289" "#B93388" "#BA3487" "#BB3586" "#BC3685" "#BD3784" "#BE3883" "#BF3982" "#C03B81" "#C13C80" "#C23D80"
    "#C33E7F" "#C43F7E" "#C5407D" "#C6417C" "#C7427B" "#C8447A" "#C94579" "#CA4678" "#CB4777" "#CC4876" "#CD4975" "#CE4A75"
    "#CF4B74" "#D04D73" "#D14E72" "#D14F71" "#D25070" "#D3516F" "#D4526E" "#D5536D" "#D6556D" "#D7566C" "#D7576B" "#D8586A"
    "#D95969" "#DA5A68" "#DB5B67" "#DC5D66" "#DC5E66" "#DD5F65" "#DE6064" "#DF6163" "#DF6262" "#E06461" "#E16560" "#E26660"
    "#E3675F" "#E3685E" "#E46A5D" "#E56B5C" "#E56C5B" "#E66D5A" "#E76E5A" "#E87059" "#E87158" "#E97257" "#EA7356" "#EA7455"
    "#EB7654" "#EC7754" "#EC7853" "#ED7952" "#ED7B51" "#EE7C50" "#EF7D4F" "#EF7E4E" "#F0804D" "#F0814D" "#F1824C" "#F2844B"
    "#F2854A" "#F38649" "#F38748" "#F48947" "#F48A47" "#F58B46" "#F58D45" "#F68E44" "#F68F43" "#F69142" "#F79241" "#F79341"
    "#F89540" "#F8963F" "#F8983E" "#F9993D" "#F99A3C" "#FA9C3B" "#FA9D3A" "#FA9F3A" "#FAA039" "#FBA238" "#FBA337" "#FBA436"
    "#FCA635" "#FCA735" "#FCA934" "#FCAA33" "#FCAC32" "#FCAD31" "#FDAF31" "#FDB030" "#FDB22F" "#FDB32E" "#FDB52D" "#FDB62D"
    "#FDB82C" "#FDB92B" "#FDBB2B" "#FDBC2A" "#FDBE29" "#FDC029" "#FDC128" "#FDC328" "#FDC427" "#FDC626" "#FCC726" "#FCC926"
    "#FCCB25" "#FCCC25" "#FCCE25" "#FBD024" "#FBD124" "#FBD324" "#FAD524" "#FAD624" "#FAD824" "#F9D924" "#F9DB24" "#F8DD24"
    "#F8DF24" "#F7E024" "#F7E225" "#F6E425" "#F6E525" "#F5E726" "#F5E926" "#F4EA26" "#F3EC26" "#F3EE26" "#F2F026" "#F2F126"
    "#F1F326" "#F0F525" "#F0F623" "#EFF821"
  } \
  viridis {
    "#440154" "#440255" "#440357" "#450558" "#45065A" "#45085B" "#46095C" "#460B5E" "#460C5F" "#460E61" "#470F62" "#471163"
    "#471265" "#471466" "#471567" "#471669" "#47186A" "#48196B" "#481A6C" "#481C6E" "#481D6F" "#481E70" "#482071" "#482172"
    "#482273" "#482374" "#472575" "#472676" "#472777" "#472878" "#472A79" "#472B7A" "#472C7B" "#462D7C" "#462F7C" "#46307D"
    "#46317E" "#45327F" "#45347F" "#453580" "#453681" "#443781" "#443982" "#433A83" "#433B83" "#433C84" "#423D84" "#423E85"
    "#424085" "#414186" "#414286" "#404387" "#404487" "#3F4587" "#3F4788" "#3E4888" "#3E4989" "#3D4A89" "#3D4B89" "#3D4C89"
    "#3C4D8A" "#3C4E8A" "#3B508A" "#3B518A" "#3A528B" "#3A538B" "#39548B" "#39558B" "#38568B" "#38578C" "#37588C" "#37598C"
    "#365A8C" "#365B8C" "#355C8C" "#355D8C" "#345E8D" "#345F8D" "#33608D" "#33618D" "#32628D" "#32638D" "#31648D" "#31658D"
    "#31668D" "#30678D" "#30688D" "#2F698D" "#2F6A8D" "#2E6B8E" "#2E6C8E" "#2E6D8E" "#2D6E8E" "#2D6F8E" "#2C708E" "#2C718E"
    "#2C728E" "#2B738E" "#2B748E" "#2A758E" "#2A768E" "#2A778E" "#29788E" "#29798E" "#287A8E" "#287A8E" "#287B8E" "#277C8E"
    "#277D8E" "#277E8E" "#267F8E" "#26808E" "#26818E" "#25828E" "#25838D" "#24848D" "#24858D" "#24868D" "#23878D" "#23888D"
    "#23898D" "#22898D" "#228A8D" "#228B8D" "#218C8D" "#218D8C" "#218E8C" "#208F8C" "#20908C" "#20918C" "#1F928C" "#1F938B"
    "#1F948B" "#1F958B" "#1F968B" "#1E978A" "#1E988A" "#1E998A" "#1E998A" "#1E9A89" "#1E9B89" "#1E9C89" "#1E9D88" "#1E9E88"
    "#1E9F88" "#1EA087" "#1FA187" "#1FA286" "#1FA386" "#20A485" "#20A585" "#21A685" "#21A784" "#22A784" "#23A883" "#23A982"
    "#24AA82" "#25AB81" "#26AC81" "#27AD80" "#28AE7F" "#29AF7F" "#2AB07E" "#2BB17D" "#2CB17D" "#2EB27C" "#2FB37B" "#30B47A"
    "#32B57A" "#33B679" "#35B778" "#36B877" "#38B976" "#39B976" "#3BBA75" "#3DBB74" "#3EBC73" "#40BD72" "#42BE71" "#44BE70"
    "#45BF6F" "#47C06E" "#49C16D" "#4BC26C" "#4DC26B" "#4FC369" "#51C468" "#53C567" "#55C666" "#57C665" "#59C764" "#5BC862"
    "#5EC961" "#60C960" "#62CA5F" "#64CB5D" "#67CC5C" "#69CC5B" "#6BCD59" "#6DCE58" "#70CE56" "#72CF55" "#74D054" "#77D052"
    "#79D151" "#7CD24F" "#7ED24E" "#81D34C" "#83D34B" "#86D449" "#88D547" "#8BD546" "#8DD644" "#90D643" "#92D741" "#95D73F"
    "#97D83E" "#9AD83C" "#9DD93A" "#9FD938" "#A2DA37" "#A5DA35" "#A7DB33" "#AADB32" "#ADDC30" "#AFDC2E" "#B2DD2C" "#B5DD2B"
    "#B7DD29" "#BADE27" "#BDDE26" "#BFDF24" "#C2DF22" "#C5DF21" "#C7E01F" "#CAE01E" "#CDE01D" "#CFE11C" "#D2E11B" "#D4E11A"
    "#D7E219" "#DAE218" "#DCE218" "#DFE318" "#E1E318" "#E4E318" "#E7E419" "#E9E419" "#ECE41A" "#EEE51B" "#F1E51C" "#F3E51E"
    "#F6E61F" "#F8E621" "#FAE622" "#FDE724"
  } \
  cividis {
    "#00204C" "#00204E" "#002150" "#002251" "#002353" "#002355" "#002456" "#002558" "#00265A" "#00265B" "#00275D" "#00285F"
    "#002861" "#002963" "#002A64" "#002A66" "#002B68" "#002C6A" "#002D6C" "#002D6D" "#002E6E" "#002E6F" "#002F6F" "#002F6F"
    "#00306F" "#00316F" "#00316F" "#00326E" "#00336E" "#00346E" "#00346E" "#01356E" "#06366E" "#0A376D" "#0E376D" "#12386D"
    "#15396D" "#17396D" "#1A3A6C" "#1C3B6C" "#1E3C6C" "#203C6C" "#223D6C" "#243E6C" "#263E6C" "#273F6C" "#29406B" "#2B416B"
    "#2C416B" "#2E426B" "#2F436B" "#31446B" "#32446B" "#33456B" "#35466B" "#36466B" "#37476B" "#38486B" "#3A496B" "#3B496B"
    "#3C4A6B" "#3D4B6B" "#3E4B6B" "#404C6B" "#414D6B" "#424E6B" "#434E6B" "#444F6B" "#45506B" "#46506B" "#47516B" "#48526B"
    "#49536B" "#4A536B" "#4B546B" "#4C556B" "#4D556B" "#4E566B" "#4F576C" "#50586C" "#51586C" "#52596C" "#535A6C" "#545A6C"
    "#555B6C" "#565C6C" "#575D6D" "#585D6D" "#595E6D" "#5A5F6D" "#5B5F6D" "#5C606D" "#5D616E" "#5E626E" "#5F626E" "#5F636E"
    "#60646E" "#61656F" "#62656F" "#63666F" "#64676F" "#65676F" "#666870" "#676970" "#686A70" "#686A70" "#696B71" "#6A6C71"
    "#6B6D71" "#6C6D72" "#6D6E72" "#6E6F72" "#6F6F72" "#6F7073" "#707173" "#717273" "#727274" "#737374" "#747475" "#757575"
    "#757575" "#767676" "#777776" "#787876" "#797877" "#7A7977" "#7B7A77" "#7B7B78" "#7C7B78" "#7D7C78" "#7E7D78" "#7F7E78"
    "#807E78" "#817F78" "#828078" "#838178" "#848178" "#858278" "#868378" "#878478" "#888578" "#898578" "#8A8678" "#8B8778"
    "#8C8878" "#8D8878" "#8E8978" "#8F8A78" "#908B78" "#918C78" "#928C78" "#938D78" "#948E78" "#958F78" "#968F77" "#979077"
    "#989177" "#999277" "#9A9377" "#9B9377" "#9C9477" "#9D9577" "#9E9676" "#9F9776" "#A09876" "#A19876" "#A29976" "#A39A75"
    "#A49B75" "#A59C75" "#A69C75" "#A79D75" "#A89E74" "#A99F74" "#AAA074" "#ABA174" "#ACA173" "#ADA273" "#AEA373" "#AFA473"
    "#B0A572" "#B1A672" "#B2A672" "#B4A771" "#B5A871" "#B6A971" "#B7AA70" "#B8AB70" "#B9AB70" "#BAAC6F" "#BBAD6F" "#BCAE6E"
    "#BDAF6E" "#BEB06E" "#BFB16D" "#C0B16D" "#C1B26C" "#C2B36C" "#C3B46C" "#C5B56B" "#C6B66B" "#C7B76A" "#C8B86A" "#C9B869"
    "#CAB969" "#CBBA68" "#CCBB68" "#CDBC67" "#CEBD67" "#D0BE66" "#D1BF66" "#D2C065" "#D3C065" "#D4C164" "#D5C263" "#D6C363"
    "#D7C462" "#D8C561" "#D9C661" "#DBC760" "#DCC860" "#DDC95F" "#DECA5E" "#DFCB5D" "#E0CB5D" "#E1CC5C" "#E3CD5B" "#E4CE5B"
    "#E5CF5A" "#E6D059" "#E7D158" "#E8D257" "#E9D356" "#EBD456" "#ECD555" "#EDD654" "#EED753" "#EFD852" "#F0D951" "#F1DA50"
    "#F3DB4F" "#F4DC4E" "#F5DD4D" "#F6DE4C" "#F7DF4B" "#F9E049" "#FAE048" "#FBE147" "#FCE246" "#FDE345" "#FFE443" "#FFE542"
    "#FFE642" "#FFE743" "#FFE844" "#FFE945"
  } \
  turbo {
    "#30123b" "#311542" "#32184a" "#341b51" "#351e58" "#36215f" "#372365" "#38266c" "#392972" "#3a2c79" "#3b2f7f" "#3c3285"
    "#3c358b" "#3d3791" "#3e3a96" "#3f3d9c" "#4040a1" "#4043a6" "#4145ab" "#4148b0" "#424bb5" "#434eba" "#4350be" "#4353c2"
    "#4456c7" "#4458cb" "#455bce" "#455ed2" "#4560d6" "#4563d9" "#4666dd" "#4668e0" "#466be3" "#466de6" "#4670e8" "#4673eb"
    "#4675ed" "#4678f0" "#467af2" "#467df4" "#467ff6" "#4682f8" "#4584f9" "#4587fb" "#4589fc" "#448cfd" "#438efd" "#4291fe"
    "#4193fe" "#4096fe" "#3f98fe" "#3e9bfe" "#3c9dfd" "#3ba0fc" "#39a2fc" "#38a5fb" "#36a8f9" "#34aaf8" "#33acf6" "#31aff5"
    "#2fb1f3" "#2db4f1" "#2bb6ef" "#2ab9ed" "#28bbeb" "#26bde9" "#25c0e6" "#23c2e4" "#21c4e1" "#20c6df" "#1ec9dc" "#1dcbda"
    "#1ccdd7" "#1bcfd4" "#1ad1d2" "#19d3cf" "#18d5cc" "#18d7ca" "#17d9c7" "#17dac4" "#17dcc2" "#17debf" "#18e0bd" "#18e1ba"
    "#19e3b8" "#1ae4b6" "#1be5b4" "#1de7b1" "#1ee8af" "#20e9ac" "#22eba9" "#24eca6" "#27eda3" "#29eea0" "#2cef9d" "#2ff09a"
    "#32f197" "#35f394" "#38f491" "#3bf48d" "#3ff58a" "#42f687" "#46f783" "#4af880" "#4df97c" "#51f979" "#55fa76" "#59fb72"
    "#5dfb6f" "#61fc6c" "#65fc68" "#69fd65" "#6dfd62" "#71fd5f" "#74fe5c" "#78fe59" "#7cfe56" "#80fe53" "#84fe50" "#87fe4d"
    "#8bfe4b" "#8efe48" "#92fe46" "#95fe44" "#98fe42" "#9bfd40" "#9efd3e" "#a1fc3d" "#a4fc3b" "#a6fb3a" "#a9fb39" "#acfa37"
    "#aef937" "#b1f836" "#b3f835" "#b6f735" "#b9f534" "#bbf434" "#bef334" "#c0f233" "#c3f133" "#c5ef33" "#c8ee33" "#caed33"
    "#cdeb34" "#cfea34" "#d1e834" "#d4e735" "#d6e535" "#d8e335" "#dae236" "#dde036" "#dfde36" "#e1dc37" "#e3da37" "#e5d838"
    "#e7d738" "#e8d538" "#ead339" "#ecd139" "#edcf39" "#efcd39" "#f0cb3a" "#f2c83a" "#f3c63a" "#f4c43a" "#f6c23a" "#f7c039"
    "#f8be39" "#f9bc39" "#f9ba38" "#fab737" "#fbb537" "#fbb336" "#fcb035" "#fcae34" "#fdab33" "#fda932" "#fda631" "#fda330"
    "#fea12f" "#fe9e2e" "#fe9b2d" "#fe982c" "#fd952b" "#fd9229" "#fd8f28" "#fd8c27" "#fc8926" "#fc8624" "#fb8323" "#fb8022"
    "#fa7d20" "#fa7a1f" "#f9771e" "#f8741c" "#f7711b" "#f76e1a" "#f66b18" "#f56817" "#f46516" "#f36315" "#f26014" "#f15d13"
    "#ef5a11" "#ee5810" "#ed550f" "#ec520e" "#ea500d" "#e94d0d" "#e84b0c" "#e6490b" "#e5460a" "#e3440a" "#e24209" "#e04008"
    "#de3e08" "#dd3c07" "#db3a07" "#d93806" "#d73606" "#d63405" "#d43205" "#d23005" "#d02f04" "#ce2d04" "#cb2b03" "#c92903"
    "#c72803" "#c52602" "#c32402" "#c02302" "#be2102" "#bb1f01" "#b91e01" "#b61c01" "#b41b01" "#b11901" "#ae1801" "#ac1601"
    "#a91501" "#a61401" "#a31201" "#a01101" "#9d1001" "#9a0e01" "#970d01" "#940c01" "#910b01" "#8e0a01" "#8b0901" "#870801"
    "#840701" "#810602" "#7d0502" "#7a0402"
  }
# dont print to console
]; list 

#
# Procedures to set scales and then use viridis as default
#

proc inferno_scale {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales inferno]
}
proc magma_scale   {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales magma]
}
proc plasma_scale  {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales plasma]
}
proc viridis_scale {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales viridis]
}
proc cividis_scale {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales cividis]
}
proc turbo_scale   {} {
  variable new_color_scales
  set_color_scale [dict get $new_color_scales turbo]
}

puts "New scales are available via the following commands:
`inferno_scale`, `magma_scale`, `plasma_scale`, `viridis_scale`,
`cividis_scale`, & `turbo_scale`.

Viridis is loading now..."

viridis_scale

puts "Done\n"