I love the name you picked for your frog!!!! My red eye does this to changes to a milky white. i think it has to do with the lighting..one half of her will be white and the other half green where theirs not tons of light. i dont think its something to worry about tho ill let someone more experienced tell you if it is. Jewl's been doing it for a long time and it doesnt seem to cause or be a sign of any problems so i think your little Pepito is safe. but ill let someone with more experience then i determine that.