My research of Milwaukee's FP7's in the original scheme of orange/maroon/black show unpainted grills. It seems they were painted black in the 1960's when they simplified the paint scheme to orange black. And yes, the paint often flaked off afterwards. So, I think Intermountain's is more correct however their attempt at lift rings on the roof come off as large plastic blobs. They are the first thing I carve off the shell and replace with etched metal parts.