NYT Connections Green Group Hint

There’s your visual hint for today’s blue group. It might be your eureka! moment. (No, sorry, that was not a clue.) Or it might not have helped at all. Hey, we try.
Time for the verbal clue: It’s the slap-on-the-back group today, or what you’ll say to yourself if you solve today’s Connections with a perfect score.
No? We were detecting a theme by now. Today’s groups are relatively simple except for that one multi-meaning word that fits with the other three multi-meaning words in today’s puzzle. Or maybe we shouldn’t have done Connections on an empty stomach.
Today’s blue group answer is “Great Job!” and its words are IMPRESSIVE, NICE, PROPS, and WELL DONE.