Bubblegum Block

This is the Orichalcum tier brick, and the only ore block whose name gives no hint what went into it. Placed, it reads as stone under a bright pink coating. There is no subtle version of that, so it either fits the build exactly or it does not fit at all.

Current versions make it immune to explosives, which turns a color choice into a practical one. Line an arena floor or the outer shell of a base with it and you stop worrying about a stray bomb or the enemies that punch holes in terrain. Worth keeping in mind for anything you would rather not repair twice.