Succulents that thrive in an indoor environment typically have mid to deep green foliage similar to other indoor foliage plants. Succulents with lighter foliage: grey, light green, yellow, purple and red leaves need the sun to maintain a nice shape, colour and form. Others need to be in the sun to flower. Efforts can be made to keep indoors in very bright positions but colours may dull, stems may stretch and weaken looking for light (known as etiolation). The best foliage colours are often achieved in sun and many succulents will not flower unless they receive adequate light. These succulents love a morning sun position with protection from afternoon sun in summer.