All natural (mostly) wood stains! A handful of pennies in vinegar will produce a beautiful pale Caribbean blue stain. A wad of steel wool will give you a rich reddish hue. A combination of tea and a metal object in vinegar will produce a black stain.
I like the idea for kitchen counter. (AW) DIY wood plank kitchen table picture step by step ~ would also be really really awesome for kitchen counters! Stained black with high gloss protectant over them.