This is a collection of several blocks that I made, modified or found. You can use them in your own projects by adding them to your backpack. The one I find most useful is the detect color block, which I owe huge thanks to frodewin for. This is the project he used it in: (https://scratch.mit.edu/projects/13412067/). I feel that finding the color a sprite is touching should be a feature that Scratch should have by itself. It would be useful for a color wheel (hint, hint).
Credits to @griffpatch (https://scratch.mit.edu/users/griffpatch/) and @frodewin (https://scratch.mit.edu/users/frodewin/) for the code on some of the custom blocks in this project.