Thanks for playing! Audio settings are available in the pause menu, which you can access by hitting Tab (I know but it was tab while we developed and we failed to change it before submitting the build). There is a note on the desk with the controls. If you were not able to pause the game with tab please let us know as that is a bug. As for the colouring, you are right, but we were relying more on players desire to experience the game, and the freedom to draw what they want, and not force them into drawing specific images. Thanks for the feedback!