No Ads feature disables ads before opening picture and banner ads in the app. However please note you still can watch ads to get extra bonuses in the game.
Please pay attention a pop-up on the game field is not an ad. It is an offer to use a special booster which can help to speed up the coloring. Here's how it works: once you tap the pop-up there is an ad to watch and then you can color as much as you can in 12 seconds by swiping the screen without paying attention to colors.