I started using chdk recently to take pictures with my Canon Powershot sx280hs. When I started saving high ISO pictures in the DNG format, a few pictures would come out with a purple/pink/blue tint to them. Nothing I've done has really changed the frequency.
According to what I've found, it might be because the original canon firmware changes the way the colors are saved in the DNG, which causes the image to take on a tint. It didn't say anything about how to fix it, though.
Why is this happening, and is there any way to prevent it? If there isn't, could I edit the image afterwards to get rid of the tint?