So I just get home and I plug in my 16 gig 5.0.1 jailbroken iphone 3GS and BOOM! A mustard colored screen. I try EVERYTHING from Hard reset to banging it with my palm. But after hours of look ing for ways to fix it i finally find it . Their are several ways:

Hold power button for 6-10 seconds

Plug into charger for 30 minutes(most people will freak out and unplug their iphone)

The apple "geniouses" wont help you so i hope this will help you BTW i had this post in my notes but nodmyi wouldint let me postit for somereason