solid-coloredприлагательное Used attributively or predicatively to describe something that has only one color.
He prefers solid-colored shirts to patterned ones.
Он предпочитает однотонные рубашки узорчатым.
solid-coloredпричастие прошедшего времени Functions as a past-participle adjective describing something that has been dyed/painted in a single, uniform color.
The fabric was solid-colored before the design was added.
Ткань была однотонной до того, как на неё нанесли рисунок.