I had the same issue when I built my Bf 109 E-3. Apparently they were painted in RLM 02 up until early 1941 and the dashes were always RLM 66. It would be safe to say the D version could go either way I suppose, depending when it was in service. RLM 66 is a boring grey, so I lighten mine with a tad of neutral grey and drybrush the details silver to make it more interesting. Add a wash to really make it pop. Here’s how I did mine if your interested.
cs.finescale.com/…/157297.aspx
Hope it helps,
Joe