The V1 has the short wing and was used successfully for speed record breaking purposes. It was finished in overall blue before it was taken for permanent exhibit at the Berlin Museum.
The V4 was converted as a fighter to succeed the Bf109 - an exercise which was not successful. It had longer wings, a larger tailfin, shorter undercarriage and armament. It was finished in fighter colours as a propaganda exercise. Published colour schemes show this aircraft in an overall Light Grey 63 scheme which is incorrect as photographs show it in a light mottle camouflage scheme and in a shade darker than 63. I have done my model in overall Light Blue 65 with Grey 02 / Dark Green 71 light mottle which is more in line with the colours in use at the time of the propaganda exercise.
These are very early models from Huma and need work to obtain a decent result. They are also very small - roughly the size of an index finger!