The closest color to pure Cyan is Sky Blue so that's what color your chocobo would end up being. Similarly pure red is closest to Sunset Orange, pure green to Cactuar Green, pure blue to Royal Blue, pure yellow to Honey Yellow, and pure magenta to Colibri Pink. In theory these should be the easiest colors to reach since feeding a single type of fruit will eventually end at these colors (in actuality, there is usually a more efficient way to reach each color).
