Whatever opened the door today, it would be great to prop it like that, permanently. Everyone was in the groove.
Was it the weather? Or maybe just getting out from under the usual expectations.
Try a similar approach to a still life. Set up a few objects, preferably with a single light source, and slide out of your regular comfort zone. Get a good grip on the actual value relationships, but let the colors go where they will.
Imagine if colors were reversed, with red becoming green, and yellow-green becoming red-violet.