Looks good to me. But these colours don't need to be to presice. They could vary depending on who made the paint. I recall reading one article a while back that said a museum was restoring a 251. When they peeled of the paint, they found somthing like 3 different shades of dark Yellow.
Are you planning on giving it an oil wash, as that will make it darker.
I am a Norfolk man and i glory in being so
On the bench: Airfix 1/72nd Harrier GR.3/Fujimi 1/72nd Ju 87D-3