I noticed that yellow color (that is cadmium yellow) disappeared after drying the painting at 200°F for 30min. Did anyone ever have this issue?
Here is how my painting looked like before drying:
... and here is how it looks like now after the heating:
I cannot explain this. The leaves at the lower-right corner almost have not changed in color. Strange. I called it The ladybug effect. Hope someone can explain this...