Colors also promote a feeling of well-being. Colors are described as warm and cold. Inadequate lighting and even design errors can be compensated with a clever selection of colors. Basically interior color decoration is a matter of taste and everyone has personal preferences regarding colors, and these should be followed.

These are some general rules:

• Light, cool colors make a room seem larger. 
• Dark, warm colors make a room optically smaller.
• Rooms with a dark ceiling seem lower. 
• Rooms with a light ceiling seem higher. 
• Color saturation and intensity should decline from bottom to top. 
• Color contrasts and ornaments have an invigorating to turbulent effect, and they make smaller rooms seem optically smaller. 
• Paint rooms that have much sunlight with dampening colors, northern rooms with light colors. 
• Warm colors in the spectrum red-orange-yellow are invigorating and dynamic; they make rooms with little sun irradiation cheerful and comfortable; dark warm colors are relaxing. 
• Cool colors in the spectrum violet-blue-green in all their shades are suitable for rooms that require concentration; intellectually stimulating and cooling; dark cool colors create a serious atmosphere.

Wall colors & painting techniques

Alone due to their large surface areas, walls play a significant role in the color decoration of a room and significantly affects the atmosphere.

Creative painting techniques

• Spatula techniques (dispersion or silicate based) create a noble surface and are suitable for exclusive decoration wishes.
• Dipping techniques (wall is painted with a base color and then special effects are created with an accent color and a natural sponge). 
• Glazing techniques create cloudy effects.
• Wrap techniques (a leather wrap creates airy effects) 
• Template techniques (use a slightly damp sponge or brush to apply a little color via a form or template)

Paints

• Synthetic resin dispersion paints (high coverage, washable, some also suitable for outside). 
• Natural resin dispersion paints (washable, vapor permeable, usually (!) free of emissions and solvents) 
• Lime-based paints (disinfecting, no pollutant emissions, pleasant room climate, not washable) 
• Distemper paints (washable, not water-proof, good coverage, not suitable for painting over) 
• Silicate paints (vapor permeable, free of pollutants, adhere well to Kalk-, Kalk cement and cement plasters) 
• Casein paints (washable, ecologically recommended) 
• Fluid wallpaper (a material that is applied to the wall and dries there) can be combined with color and glitter materials for a feeling of well-being; advantages include excellent noise and thermal insulation, healthy climate, (usually) natural materials, easy to remove (with water).

Persons with allergies should be careful in their selection of paints. Choose air-permeable paints that contain neither pollutants nor preservatives and that do not release aerosols. Seek advice in a qualified paint store.