Chocobo not changing color?

[Raxion]

You need to feed your Chocobo enough fruit that you get the message "[Chocobo's Name] is beginning to grow new feathers!" Every further appearance of that message will be the chocobo changing to a different color.

I see. So feeding it only 9 fruit was just a waste? I'll just stick to selling the fruit then. I'd rather make gil over having a different chocobo. I thought I could get away with feeding just a handful, and selling the rest.