While I was reading through the Lua scripting documentation, I noticed that the material has a method called forge.materialColor which takes two parameters: a string for the material name and a hex value for the color code. However, I couldn’t find any way to change the name of a new material — it always defaults to "customN", where "N" is a number.
So here’s another suggestion: the ability to rename materials freely. (:
P.S.: If I’m just being a little dumb or blind and missed the option to change the material name somewhere, please let me know!