Here is a little info on the color changes for the adult.
Wide black stripe through eye to base of tail, bordered above by prominent gold line. Large black spot on mid-side. Large black spot on mid-side above origin of anal fin (Ref. 26938). Three transverse red bands on top of head; large adult males become primarily rose and green, lose the dark lateral stripe, gain a prominent black spot on mid-side, and have a larger black spot in the spinous portion of the dorsal fin (Ref. 13442).