"Velvet" strikes me as not quite precise there, since I think you really do mean darkness.
If I were you, I'd also think about revising "gorgeous beauty." First, it's redundant--the adjective and the noun say the same thing so you're using two words and not getting a two words' worth of info. But also, it's abstract. I can't picture "beauty" in a concrete way. What's the darkness covering from the POV character's vantage point? A forest? The prairie? Mountains? The sea? You could replace "gorgeous beauty" with a phrase that specifically says what beautiful sight is hidden.