De-colors, as the term suggests, means to remove or reduce coloring. The opposite of de-colors is colorize or pigmentation, which means to add or increase color in something. Another antonym for de-colors is vibrant or colorful, which means full of exciting, bold and bright colors. Shades, tints, and hues are also antonyms for de-colors. These are terms used to describe different colors, tones, and hues that can be added to something to give it a unique shade. By using different antonyms for de-colors, you can create a wide range of contrasting effects that can be used to impact a product's overall look and feel.