Green uppersurfaces, with light blue undersurfaces;
this scheme is common for MiG-1s and early MiG-3s, till the war outbreak.
The metal surfaces (aft fuselage, horizontal tail surfaces, central wing
plan) appear lighter than the wood surfaces (rear fuselage, outer wing
panels); this was probably due to different painting techniques on separed
sub-assemblies before the final assembly.
Some prototypes and test aircrafts appear painted with a darker shade,
called Factory Green; this was perhaps the same colour used on many I-16
and most I-15bis; it's not sure that some operative aircrafts had this
color.