Congrats on completing Chapter 3. Just want to give you a heads-up that using a Market Build outside of Steam will cause Mac users a lot of grief. Mac applications run by directly executing a ".app" package. Market Builds, however, silently fail when the ".app" is called. For your game, Mac users need to go inside the application itself (something most users won't know how to do).
Mac users will need to execute the following command:
ColorOfMySound.app/Contents/MacOS/ColorOfMySound
In future, please consider a separate macOS build for Itch. Cheers.