>>5442257right click->settings->Field Definition->edit the Light/Dark colors b replacing with the RGB codes. It shouldn't be too difficult.
By the way, the other day I found an add-on for rebranding firefox. It seems like more trouble than it's worth though. If you happen to find an easier way, I would be interested in seeing it.
>>5442802The /wg/ and /w/ desktop pastebins have good information to get started.
https://addons.mozilla.org/en-US/firefox/addon/rebrand/?src=api