[FFmpeg-user] Removing false colors

[Alexander Winnig]

Hello.

I encountered this problem when my video recording device got warmer.

http://i.stack.imgur.com/WREDA.jpg

How do I fill all areas that have that same colored violet or green with 
a gradient between two right(as in intended) colors(the way logoaway 
solutions do it) or using some other method that recreates the original 
image using ffmpeg?

Thanks in advance.

Alexander