Code:
Amount fed | Color | (RRR, GGG, BBB)
------------------------------------------------------------------
Starting Color | Desert Yellow | (216, 175, 80)
+3 O'ghomoro Berries, 3 total | Cork Brown | (197, 139, 79)
+1 O'ghomoro Berries, 4 total | Ul Brown | (178, 157, 105)
+3 O'ghomoro Berries, 7 total | Gobbiebag Brown | (180, 158, 130)
+2 O'ghomoro Berries, 9 total | Shale Brown | (140, 122, 101)
+2 O'ghomoro Berries, 11 total | Goobbue Grey | (130, 128, 125)
+3 O'ghomoro Berries, 14 total | Lavender Blue | (128, 120, 169)
In theory if the change is steady someone could test whether it's amount of fruits or new feathers messages by seeing what happens if they feed O'ghomoro Berries and get the message 6 times? At least if I'm understanding things correctly.