Click the green flag, and then click somewhere in the image to the right, to get the RGB color of the clicked pixel. Click the green flag again to switch image. You can also change the sliders directly.
:::::::::::::::::: Notes :::::::::::::::::: This demonstrates how a mix of just three colors can produce virtually any color. If you're wondering which colors it CANNOT produce, read up on gamut: https://en.wikipedia.org/wiki/Gamut :::::::::::::::::: Credits :::::::::::::::::: Thanks to @s_federici for suggesting I do this, in the comments of the original project. Thanks to @griffpatch for the scanner. The one in this project is a remix of the one in Griffpatch's Blue Line Filter: https://scratch.mit.edu/projects/678512904/