Same here, I wanted grey and ended up with tan. Now I like tan a little better. Although the lighter carpet shows stains, I've been able to get everything out, including grease from a bike chain.I was looking for a grey interior...
But, after testing a "grey" and many "brown" I found the brown pretty nice.
I feel the grey interior more beautiful, on picture, but in the true life, grey interior appears (a little bit) cheaper (personal judgement , of course)