Effective layering of color in dopamine decor involves using the 60-30-10 rule: sixty percent of a joyful statement color for walls or large furnishings, thirty percent of a complementary secondary color on sofas or rugs, and ten percent of accent colors through accessories like pillows or art. This balance ensures vibrancy without chaos. Combining saturated hues with warm neutrals softens the effect while preserving emotional impact. Start with your favorite joy-triggering palette and build layers gradually to craft harmonious, mood-enhancing spaces.