The word "mouse-colored" describes a dull grayish-brown shade, often seen in animals like mice and commonly used to describe clothing or furniture. Antonyms for mouse-colored can be vibrant and diverse, including words like flamboyant, vibrant, kaleidoscopic, and multicolored. These words describe bright, bold hues that catch the eye and add a pop of color to any room or outfit. Other antonyms include terms like sparkling, iridescent, glistening, and luminous, which evoke images of shimmering, radiant colors that reflect light in fascinating ways. Overall, antonyms for "mouse-colored" range from the subdued to the flashy, providing a wide range of choices for those seeking to add color to their lives.