Bright green droppings (brighter than normal), polyuria and bubbles are potential signs of a sick bird.
However, it could also be diet related. Is it possible that Kaleeko is eating all the green Zupreem?
I would recommend buying some Zupreem Natural and seeing if that clears up both the color as well as the watery droppings. I don't have photos, but when my conure was on the Zupreem Fruit Blend, his droppings were all sorts of colors (green, red, purple, brown...) and rarely ever had any form. Switched him to Zupreem Natural and his droppings became one or two colors (green to sandy brown) and the majority of his droppings all had form to them. He's now eating Harrison's and his droppings look even better now!!!!
Some other owners of medium sized birds also noticed the difference in their birds droppings between the Fruit Blend and Natural. Owners with large parrots commented that their birds droppings were green (i.e. no dyes) and normal.