Curtains should match something in the room. I don't see anything gray in there, but might be my monitor. I would match a color from the rug, if you like dark.

Hi! there are teal, smokey blue colors in the rug and also bronze, magenta, ivory. Thanks!

close up of rug... my dining chairs are charcoal gray on other side of room (same wall color and same drape color on patio slider) and they work well in the room.

dining chairs

picture of another angle of room with darker curtain sample draped over accent chair

I think that gray would deaden the other colors in your beautiful room!

Thanks, everyone, for your help!!!

Out of the two choices, I surprised myself ... at first I thought the darkest one. But I did a quick mock-up with them at the window and am definitely liking the lighter gray (Natural Gray) better. The dark one seemed disjointed, the lighter one picks up other colors in the room.

Trying to go the inexpensive route and get ready-to-hang room darkening curtains in 100" width. Not a lot of choices out there! These happen to be well rated on Amazon. Signature Velvet Double Wide drapes. And the lighter gray also surprised me as being the one that I think may work better...the combo of warm and cool tones balance better (I think?). Thanks!

more pics of room.