I looked around for a comprehensive chocobo coloring guide and found this site:

http://ffxiv.consolegameswiki.com/wiki/Chocobo_Colors

I was going for slate grey which calls for "O'Ghomoro Berries x21, Xelphatol Apple x7, Mamook Pear x7". So I bought those fruit at a cost of 60k gil and shoved them down my bird's throat.

Then I went to bed, and when I got up... it wasn't slate grey but gloom purple.

How would I get from gloom purple to slate grey? I don't have a lot of resources - my highest job is only 38 BLM.