It looks like it will show dirt. I had a black marble top and it was hard to keep clean, due to water spots. Things that are light and have multiple colors show water spots the least.

Dark countertops will show crumbs and if shiny, every single finger print. Crumbs need to be cleaned up - don't need ants in the kitchen - but having to clean off finger marks constantly would drive me nuts.

I had dark green, almost black, granite in my last house. It didn't show anything. Not fingerprints, not mud, not dirt. Sometimes that was good...sometimes not.

I have black, I like the look, it reminds me when I need to spruce it up. I'm ok with that, I'm old and need reminding. I've also had white, same story.

We have black granite countertops and they show every crumb and streak. Only looks clean after wiping first with a damp cloth, and then a dry cloth.