I need to fill the red area with white colour. As you can see the foreground is very very white shade of pure red. Why do I get fully saturated red instead (the left circle)? Only when I go to the extreme and select a pure white, which is actually my goal, I suddenly get some dark grey (the right circle). This is frustrating, pls help. :-)
I also can't figure out why can't I just select a layer, then a bucket, and change the white background to something else? Only when I draw something on that layer, then I can change the colour of this to something else but not the white background.