Use warm lighting at approximately 2700 Kelvin to create a cozy Christmas decor ambiance. Incorporate layered light sources like string lights, lamps with warm bulbs, and candles to add depth and softness. Timed lighting scenes that fade gradually each evening foster a comforting and inviting mood. Position lights to highlight textures and key decorations, such as garlands or the Christmas tree, enhancing tactile holiday elements. Thoughtful lighting complements warm neutrals and natural materials, enriching your seasonal atmosphere throughout the darkest winter months.