User blog comment:Doue/Bloon/@comment-4814638-20131201012256/@comment-5294711-20131201160838

Try changing the brightness (not lightness) to +100 WITHOUT using Legacy (correct me if I'm wrong, but from the programs I know only Photoshop can do this... :S). It'll make the blimp as bright as it can be without losing details. Then, you can erase the skull and eyes yourself