Hi xxof,

Fortunately this is easy to fix. :) Here's how:

   Open Firefox and tap the menu button on your phone
   Tap Settings
   Tap Developer Tools and untick the box next to Paint flashing 

Hope that helps,

Jayelbe

Thanks it worked thanks be taking the time out your day to help me out

Thank you!!! I haven't been using Firefox because of this. I never turned that on, so I don't know how it got enabled, and that option wasn't there when it first happened. Plus, last time I searched I couldn't find anything on it.