About colors of thread:

 # Colors have got unique place in kasuthi or any embroidery.

 # Proper combination of colors makes beautiful work.

 # Primary colors are red blue and yellow.

 # Secondary colors are red n yellow becomes orange, yellow n blue makes green and finally blue n red makes violet.

 #  Tertiary colors are as follows:

    Red n orange makes reddish orange

   Orange and yellow makes yellowish orange.

   Red n blue makes bluish green

   yellow n green makes yellowish green.

   Blue n violet makes bluish violet.

   Red n violet makes reddish violet.

# Complementary colors.

    For yellow complimentary color would be orange.

    for red complimentary color would be violet.

# Contrast colors

  Red & green.

  yellow & violet.

  white & black.

 # Cold colors are soothing to our eyes like green, blue white etc.

 # Warm colors are used to show things brightly like yellow orange red and black as well as colors made by mixing them together.

 #  Balance should be maintained to make a beautiful combination that attracts our eyes.