So from Ink Blue, I went to Midnight Blue with a Valfruit and Plum.
Ink Blue - 22 26 34
Midnight Blue - 20 21 49
Both those fruits should've done +red, +grn, -blu.... however, it didn't do that at all if it changed to Midnight Blue. Quite the opposite, rather. So maybe it isn't strictly based of RGB number manipulation. Maybe what's happening is that you go down a 'color path' and the deeper you are in one, the harder it is to jump to a new color path altogether? So maybe I'm so deep in to blue that the only way I can hop over to a new color is to first start making my way to a brighter blue and then get myself in to new color range (grays) as I revert closer back to starting point, and from there darken down to black? Not sure. I've seen a few people mention that they have hit grays but I figure by now they would have hit black if this theory is correct...
Current feeding:
Apple - no msg
Pear - feather message
Apple - feather message