noun
characteristics of an age; period flavor
Refers to the distinctive cultural, social, or stylistic features of a particular historical period.
この建物には江戸の時代色がよく残っている。
This building retains the characteristics of the Edo period well.
彼の作品は昭和初期の時代色が強い。
His works have a strong flavor of the early Showa era.
特色 means 'distinctive feature' or 'characteristic' broadly, whereas 時代色 is limited to features tied to a historical period.
Compound of 時代 (jidai, 'era') and 色 (shoku, 'color'), literally 'era color', referring to the distinctive hue or character of a period.