"Red and green plus a touch of purple make mud"

Sure, I remember Easter egg color theory. But in Jell-O color theory, do strawberry and lime plus a touch of grape make a grey-hued concoction? And if so, would it not show up in the picture as a much darker hue instead of that pasty pale grey?

And what of the white shots? In Easter egg theory, white = uncolored shell. But uncolored gelatin is clear or nearly clear, not Elmer's-Glue White.

The opacity of the white dots and the grey dots in the picture is what makes me think that something is amiss here. What I've been trying to say all this time, in a roundabout way, is that I don't believe the artist used real Jell-O shots.