What are the colors of lotus flowers?

The motifs in traditional Rangoli are usually taken from Nature - peacocks, swans, mango, flowers, creepers, etc. The colours traditionally were derived from natural dyes - from barks of trees, leaves, indigo, etc. However, today, synthetic dyes are used in a range of bright colours. The materials used for Rangoli take on either a flat appearance, when a uniform monolayer of powders are sprinkled or a 3-D effect when different sized grains like cereals, pulses etc are used either in their natural colouring or tinted with natural dyes are used. Some artists use the 3-D effect for borders alone while others create beautiful designs using grains and beads entirely. Coloured powder can be directly used for fancy decorations, but for detailed work, generally the material is a coarse grained powder base into which colors are mixed. The base is chosen to be coarse so that it can be gripped well and sprinkled with good control. The base can be sand, marble dust, saw dust brick dust or other materials. The colors generally are very fine pigment podwers like gulal/aabir available for Holi or colors (mentioned above) specially sold for rangoli in South India. Various day to day colored powders like indigo used for cloth staining, spices like turmeric, chili, rawa, rice flour, flour of wheat etc are also variously used. Powder colors can be simply mixed into the base. If the base is light like saw dust, it can be used to make floating rangoli on the surface of stagnant water. Sometimes saw-dust or sand is soaked into waterbased color and dried to give various tints. However that probably cannot be used on water. If a rangoli is to be made on water, the color should preferably be insoluble in water.