Ever since the update, I have found myself needing to really zoom in to see what color of paint is in the pipe. If you look at the graphics, you have an outer pipe (with reflections), inner pipes (also with reflections), and a small orb of paint with black nobs on either end. The pipe graphics end up being 85% generic glass for any color, and a bit of the color itself. I was trying really hard to figure out why my shapes were not being counted only to realize the ink was grey, not white.
Maybe make the inner containers more shaped like capsules so that the color of the pipe is clear even when zoomed out.