These are some reference pictures for Mysticalize!!!

That's him as a little baby kitten.

Here's him laying on the chair by the window. He looks dead...

And now he's outside. And no, that isn't a filter.

Blu in the sink (literally the only photo where you can see his white tail tip)

And finally, a slightly older baby Blu picture.

Notes:
His gray parts are really a blue-gray
He has a white tail tip
He has yellow eyes, despite the brownish ones in his baby photos

If you need anything, please inform me!