Modules and Themes 
tractorcow/silverstripe-colorpicker
Version dev-master
Color picker field for Silverstripe CMS using the ColorPicker jQuery plugin
permanentinc/type
Version dev-master
Font Settings - based on that thing I saw a few years ago
colymba/silverstripe-colorfield
Version dev-master
SilverStripe 3 Color picker and DBField field with attitude.
ninty9notout/silverstripe-colourpicker
Version dev-master
Provides a pop-up colour picker functionality, turning a text field into a colour picker field.
exadium/gridfield-icon-row-class
Version dev-master
SilverStripe module to add (fontawesome) icons and classes to rows in GridFields
sunnysideup/selected-colour-picker
Version dev-master
Silverstrpe Module that sets a list of colours that the CMS Editor can choose from.