See afonsof/jenkins-material-theme#191
Original file: https://cdn.rawgit.com/afonsof/jenkins-material-theme/gh-pages/dist/material-blue-grey.css
Changes: remove the !important in the code below in order to keep mono space in console :
#main-panel > pre {
font-family: Roboto Mono,monospace !important;
}
:not(div.ace_editor) {
font-family: Roboto,sans-serif !important;
outline: 0;
}