Problem for me is it makes more sense that the 56th was able to get RAF camo colors and went with that.
I'd suggest that the darker cowl behind the red is darker/newer OD vs RAF dark green. If you take into account the star and bar being insignia blue, it's darker then the dark part of the camo too.
It makes more sense for the gray/green camo as they were still strafing airfields etc.
Just my thinking on it, nothing to prove it either way other then what makes the most sense to me.
It does look good though

Dan/Slack