I did the R2 shell myself, yes. took the Abu Dhabi shell, removed the sitckers, and then got to work on my own. the blue tears is paint as the contours of the shell don't allow the stickers to hold well (even factory) but all the other items on the car are my own stickers.
I want to do the R5 that was at the race, but I don't have a real good set of images to use to create the decals from, Brendan Reeves motorsports provided a great 4 sided image of what the car will look like about the end of June, and when I saw it, I said, "hey, that doesn't look too difficult to copy"