I really LIKE the Aqua Blue more. Its one of my favourite colour. However it doesnt matter to me which colour the 3DS is lol. Besides, the Cosmos Black was £20 pounds cheaper, so I just went with the black one.
To be fair I've no idea if it was updated using ChoidujourNX, but that look like it. I also can't seem to use Daybreak on a SX Core so lol. Also pardon if talking about the switch here makes you uncomfortable