Why to change anything at the current livery?
I remember that MAS had plans to get a new corporate identity with new livery and everything. But I wouldn't like to see MAS with a new livery at the moment. Maybe in a few years ...
Airmale, I think it appears as a different color due to the light. Belly and engine should still have the same color. Another actual picture of MAS 772: View Large View Medium
Photo © Miguel Snoep