Currently ore generation inside of grimstone uses normal ores, causing them to stick out. However, a fix for this is underway: https://twitter.com/henrikkniberg/status/1362095363314876418

However, ores are still capable of generating inside of patches of granite and diorite, which they very clearly stick out of and look rather unsightly as a result.

This could be fixed by introducing variants of ores for these stones as well (like what was done to fix MC-7449, MC-55228 and MC-126564), or just preventing them from spawning inside of these entirely.

As andesite is extremely similar in color to stone, it may or may not be worth adding variant ores for these