For some quality-of-life feedback, I suggest adding a Random Hue check, which can help us to get more variety with little effort for example, the logs will look like comes from different trees
#Random Hue
shy quiver
high light
Though unintentional this is somewhat of a feature: when copying the colour code of an item and pasting it onto another, the second (sometimes both) change hue a little bit. It's not difficult to work around but when these items connect (like walls or pillars) it's rather annoying: I try to do the colouring of items within one session, or copy the pieces around.
What you suggest sounds interesting, I don't know what technical limitations there are. But the cost of implementing it to work as most people would enjoy it, might not be justified: you'd have to agree on an interval of randomness