I like the yellow. It's okay for the MT3 to have its own feel.
A brighter yellow would be fine but I think it is more important to get the contrast between the dark accent/legends and the yellow right. Also, making sure the legends are crisp.
I like the renders so far. It looks well balanced.
I backed out of GMK Serika when I saw the samples. I personally thought the contrast was too harsh.
But I do think I am being nitpicky. It is still beautifully designed.