Written Instructions (same as the instructions in the project): Inside your project go to the top of the screen where there is a button called edit. HOLD SHIFT and click it. If you see three options you didn't HOLD SHIFT. If a longer menu comes up click on the icon that says edit block colors. Adjust the hue, brightness, and saturation then press apply.
I found this on the scratch wiki page labeled edit block colors https://wiki.scratch.mit.edu/wiki/Edit_Block_Colors. I made this project to show people how to change block colors because not many people know how to do this. Curated! September 1 2016 by @-Spectrum
