Feature: new component: color picker

[mP1]

Is your feature request related to a problem? Please describe.

A color picker is currently missing. Was hoping for something that had some combination such as

• sliders to control RED | GREEN | BLUE
• text boxes for RED | GREEN | BLUE showing and editing
• sliders to control HUE | SATURATION | VALUE
• text boxes for HUE | SAT | VALUE showing and editing
• a canvas showing all the colors supporting a picker to pick a color.
• im not sure how to mix rgb and hsv viewing/editing

Describe the solution you'd like
Perhaps the picker should provide a callbacks which are invoked when a color is selected passing three component values one each for Red/Green/Blue.