... colors:Dark colors: #1, #1B, #2, #4, #6, #7, #8.Light colors: #10, #12, #14, #16, #18, #22, #24, #27, # ... : Two colors or three colors are mixed like the piano keyboard, such as #P 4&22, #P 2&27 and so ... on. The piano colors especially are used for hair weft, clip-in hair ... extensions, skin weft and wigs. If pre-bonded hair with piano colors, it can not be very popular and nice.Our ...