Comment by linknoid

If the statement is "if (!isGreen)", it's much clearer to say "if is not green" than it is to say "if is green is false". Putting == true or == false makes you convert a clear statement "is green" into "true" or "false" instead of just being a natural English statement. It would be like saying in conversation, "I want to go to the store is false" instead of "I don't want to go to the store".