No, the duck did not change colour, and yes, it's still purple. Nice tries, you both, but no success yet! My sister thought the hint would've made it too obvious, but as it turns out, that is not the case.
Nope! I do hope you'll be able to believe me when I point out where it is... But it's not time to do that yet, I think.
A friend of mine that is acquainted with Find the Rubber Ducky has managed to find the ducky, after receiving the hint! So it is possible!
I'm trying to edit my picture but only imgur can accept it, but it gets shrunk down. Nothing else will accept it. Please fix what type of file this is.