After the application of watered down Woodland's Scenics - Slate Grey. The intent was to get the colour down deep. Allow to dry for a day.
So after just doing that, here it is shown with my Lexar cobblestones. It could go just with this I think.
I persevered however & did drybrushings of Charcoal Grey / Rain Gray / Yellow Ochre
Here is the completed tile in comparison to the Lexar. It does appear quite brown in this photo.
But when displayed against original carpet pieces...