If you’ve not messed about with Blender 2.8 yet you’re truly missing out. I’d previously taken some cracks at getting into this 3D software before and quickly found myself returning to the more familiar world of pen and ink or the 2D Inkscape for my artistic needs. But, just look at this procedural marble that I built that changes colors with ease―and also changes perspective (i.e. 3D).
It’s kind of incredible.
Below is a screenshot of the node setup I used for the marble. I’m not entirely sure that all of those connections are necessary, but the leftmost node is a texture, then I color it, and have the color connect to both the color of the Principled BSDF shader and to the roughness (which more or less affects how much it reflects the light; or how shiny it is).
I definitely do not understand what I’m doing well enough at this point to be said to have any idea at all of what’s going on, but I’m having a great deal of fun with it. More, certainly, to come.