I just received directly from AK Interactive (Spain), a supply of paint needs including a few bottles of their Ral 7028 (RC060).
Surprisingly, AK changed its Ral 7028 (RC060) to match authentic Ral 7028 paint as noted by Snap. Their new Ral 7028 has a bit of brownish/buff green tint to it...not bright and yellow as before. They probably read and seen enough criticism regarding the inaccuracies of their original Ral 7028 that they made the change.
I've sprayed some samples with it but for the life of me cannot download to the forum (I'm limited to an IPad).
...incidentally, AK delivered very quickly to the Western USA where I reside. They use DHL... a bit expensive but if you buy enough the deal is pretty good.