Decorative schemes can vary greatly and there are plenty of synonyms to explore when describing them. A decorative scheme can refer to the overall aesthetic, or style, of a space. Synonyms for this could include design style, decor concept, or interior motif. Focusing on the colors used in a decorative scheme, you could use synonyms such as color palette, hue scheme, or tint arrangement. Additionally, if you're looking to describe the ornamental aspects of a decorative scheme, you might use synonyms such as embellishments, flourishes, or adornments. Overall, there are a variety of words you can use to describe decorative schemes, depending on what you want to emphasize.