Pearl is dominant and will hide most other color genes those birds are carrying, except white which will show up as pied. It's hard to tell the colors accurately, but depending on where the parents came from it could be a lavender, though it looks a bit more tan than what I remember mine being.
This color chart may help - it has photos of keets, as well as adults. It helped me identify a slate keet that hatched (surprise!) from a known gene pool of pearl and white. Your keet looks like it could possibly be brown..? Regardless of color, it's very cute!
I was thinking buff dundotte but those genes would be more rare, and its hard to tell in the pictures the actual colors. Make sure you pay attention to head markings as you look at pictures/descriptions.