So, I've kinda been thinking about how to do this. What if the gryphon has soccer cleats? Well, that's what me and SomeDeviantOcelot went with, and this is the result.

So, I'd imagine a soccer uniform if the gryphon's gonna be wearing cleats:
Those shorts are gonna be a bit longer on the pant legs, with a silver strip running up on his right pant leg.
His shirt, the same blue as his limbs, also has a white stripe running in the same space as his shorts, and mirrored on his other side. His number would be 73. The amount of worlds he accidentally destroyed in his games. (An alternative could be that, instead of a solid colour, it could have vertical stripes of black and dark blue, with blue sides, and completely black sleeves, shoulders, and collar.)
Oh, right, and his shorts, except for the stripe, are black. And the (3) silver strips and number? They glow when Justin wills it. Just to be a flashy fucker.
And then, when things get dramatic, and he needs to go for the winning move, silver burns blue, like his shoes. Otherwise a mix of black and blue, or all black, and the silver bits already mentioned. But his shorts would always be black.
His shoes are black as night, and smooth as leather. But then the shimmering blue "gashes" tear into the cloth, three on each side of the foot, starting from the sole, and ripping towards the mouth of it.
'A pair of cleats, long, with soles accents and laces in blue, shiny new triangular studs dotting the underside.'
They're custom made, longer than they should be cause they were made for talons. It's a size 40+, designed for the gryphon's feet.
The cleat tread is deep, some parts of the tread having stuff of previous usage like with the trees, rubble, micros, etc.
The cleats have a pretty good grip of the ground, leaving behind big footprints~
In the middle of the sole of the cleats, there is a word: 森羅万象 "shinrabanshou" meaning "everything in nature". Basically, the cleats are a way to put micros in their place.

Art by  SomeDeviantOcelot, edited by me under the CC license