She might be holding a small brood ( first batch often is). I found that once my Kenyi matured a little bit, the female would start to dull in color and take on a yellow-ish hue when holding. I had read somewhere that it was not uncommon to see them do that...presumably it may be to look more like a subdominant male in hopes of not being harassed as much. When she was young, though, she'd stay bright blue when holding so they don't always change color. It's just nifty when they do.
If I can't see a distinct bulge in their throat from the eggs, I watch for them to tumble the eggs, which makes a really characteristic motion that looks like they are chomping with their mouthed closed (Neut said he might have seen it...I didn't particularly notice).
If you can successfully keep the aggression down, Kenyi are lots of fun. I really enjoyed mine while I had them.
