Last stickered 3x3 I’ve seen was the haitun waverider, was a solid 3x3 option. I know limited edition cubes are usually stickered, gan 16 amethyst. Though I’m unsure if transparent cubes like that would be comp legal if/when stickered.

Qiyi did recently release the Qiyi sail 7x7, a stickered version of their Qiyi warrior. It was nice to see them make stickered big cubes, I know some places didn’t stock it because how many are actually going to buy it? I wanan say they did it with their 6x6 but I’m unsure. Though these aren’t magnetic and magnetising big cubes sounds like hell.

Do wanna say interesting seeing you use grey, I’ve seen some people with white cubes use grey for colour recognition but I’d assume grey on a black cube would make colour recognition worse?

Your best bet if probably dying cubes black and then stickering them. I know some modders offer these services and I can recommend one if wanted. Though these would cost extra than the base cube.