In
early 1941 a new camouflage scheme of RLM 74+75/76 (with mottling in
RLM 02, 70 or 74) was introduced onto Luftwaffe day fighters (the early
scheme of RLM 70+71/65 remained in use on other aircraft types) and was
widely used till gradual phase out in mid-1944. RLM 65 was officially
kept as an additional colour (or maybe a substitute for RLM 76).

Luftwaffe
night aircraft initially wore a standard RLM 70+71/65 scheme, with
temporary (and later permanent) black paint replacing RLM 65 on
undersurfaces in 1940 and then becoming an overall colour in early 1941.
In 1942 the RLM 74+75/76 scheme was introduced onto night aircraft,
later simplified to a combination of RLM 75 mottling over RLM 76 base,
on some aircraft again with black undersides.