Vexillum comes from @iStopped and allows you to change the font and banner color on your notification bar. This tweak is a nice alternative to overpriced ColorBanner tweak released for $1.99. Even Jeff at iDownloadBlog.com thinks this tweak is overpriced, and should probably be less than $1 or free.
Vexillum was a little difficult to set the colors at first, but iStopped helped figure out how to make Orange. This is a very simple tweak to create, and with the RGB settings you should be able to set your notification bar banner and fonts to the colors of your liking. For FREE from Cydia.