Might seem like a lot but takes less than a few minutes if done as directed.
1)Go to this link and download this add on for Firefox.
https://addons.mozilla.org/en-US/firefox/addon/6991 At page click ''ADD TO FIREFOX''
2)Download header at
(I made it to perfectly to fit in header)
Right click the image and save to desktop or anything easy to find 3)Go to
Tools tab you will see a box named AnyColor.
When opened, at header click browse like this
Find the header you downloaded at step 2)
4)Final step, customizing the colors!
Like so, change the colors, as I did or to your taste.
Extra, if you like the one tab menu, download add on here:https://addons.mozilla.org/en-US/firefox/addon/1455
Enjoy! Reply for any comments, criticism and questions. Thanks