Thanks to another Scratcher, whose Scratch name I don't know, for suggestions/assistance. Also for listening to the annoying pinging noise when I took the screenshots. I don't use sound very often, so the music is just a loop of one of the sounds from Scratch, so you don't have to listen. If you want to use the program(to make the designs) or one of the images, please comment below.
I made the designs using a program on Java,. For the first set of grey circles, I had the circles "bounce" off of the edge, but because of the speed that I had them drawn at, the images with smaller circles became fairly geometric. For the other grey circles & the colored circles, I ran the same program each time. It created randomly placed circles(for the multicolored circles, in random colors).