I just purchased the app an hour ago and it seems to me that no matter how many times I repeat the tutorial, the color replacement remains the same even within that instruction. The stop sign remains red at the end. I am following it exactly. Is there anything else I can do?
I'm sorry to hear that, which device are you on? Have you tried to restart the application?
When you tweak the Color Balance did you use "-100%" for Red and Green value and 100% for Blue?