The multiple decal version possibilites in the Revell kit is a big plus for me.
Yes, the Do-335 was in natural metal.
The Monogram Monarch #2 book shows drawings of the Do-335 M15 single seat and two seat A12 ( werk Nr. 240119) in natural metal with painted tail surfaces and propeller/spinners and swastikas and numbers on the tail fins. White national wing insignia on the M15 only. No other insignia on the A12
A metal finish bird would be an eye-catching model.