減法 げんぽう混色 こんしょくじゃなかったです
gempō kon shokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 減法混色

1. Wasn't subtractive color mixing.; Wasn't doing subtractive color mixing.

Past/Perfective
Negative
Polite
Casual Register
Computing