Use color schemes effectively by applying the sixty-thirty-ten rule: select a main color covering sixty percent of your space, a secondary color covering thirty percent, and accent colors making up the remaining ten percent. For small apartments, neutrals with pops of bold or pastel accents create depth without congesting the space. Apply these via wall paint, rugs, pillows, and artwork. This balanced approach enhances feeling of cohesion and openness, making your 800 square foot apartment look well-designed and inviting.