Oh yeah, when you colour with SAI is it normal for the brush to go wonky on you?
Like I painted on peach
Then I took red and tried to paint it on top of peach, but nothing happens. If I twiddle around the red starts appearing kind of faintly and I have to keep on pressing a lot on the slightly red spot until it starts showing up as red.
This happens with both marker and brush, it doesn't happen when I use pencil though.