Multi-coloreds is a term that is used to describe something that has various colors. However, there are several synonyms that can be used instead of this term. One of these synonyms is "variegated," which is used to describe something that displays a variety of colors. Another synonym is "polychromatic," which means having many different colors. "Rainbow-colored" is also a synonym that can be used for multi-coloreds as it conveys the idea of a variety of colors. "Piebald" is a less commonly used synonym that refers to something that is spotted or patchy with different colors. Nonetheless, all these synonyms can be used instead of the term multi-coloreds to add variety and interest to your writing.