Color Picker - High Color 16bits

A screenshot of a program that I made that generates a random palette and creates shades for the designated color in High Color. You can find the program in my github repository.
From Wikipedia:

High color supports 15/16-bit for three RGB  colors. In 16-bit direct color, there can be 4 bits (16 possible levels) for each of the R, G, and B components, plus optionally 4 bits for alpha (transparency), enabling 4,096 (16 × 16 × 16) different colors with 16 levels of transparency. Or in some systems there can be 5 bits per color component and 1 bit of alpha (32768 colors, just fully transparent or not); or there can be 5 bits for red, 6 bits for green, and 5 bits for blue, for 65536 colors with no transparency.