Look higher.

It must be one of those "what color is the dress? blue or gold?" things because all I can see is green outfits. Compare them to the guy standing on the far left who appears to be wearing a black suit.

I do see other photos online that do actually look black to me:

Riverdale EPs address the passing of Luke Perry (Fred Andrews)

Ugh, Perry was so great on the show. I'm torn between recasting, and writing him out.

You cannot recast Fred. I think they're unfortunately going to have to write out Fred as passing away.

Apparently he was shooting some scenes in LA before he passed and we don't know if he completed the episode he was working on or not.

Yeah you are probably right. Ugh. Fred is so important (imo) to the show, to keep Archie grounded.

Ian Ziering or Jason Priestly should come on as Oscar Andrews.

That cheerleader image is so apropos right about now

Past 2 episodes Luke Perry only had 2 small scenes.