gretmn102/FsharpMyExtension

AI Summary: This GitHub issue proposes adding two new F# functions for color conversion: `decToRgb` to convert a decimal integer color into an RGB list, and `rgbToHex` to convert RGB (with alpha) byte values into a hexadecimal string. The issue includes the proposed F# code implementations for both functions, along with a test case for `rgbToHex`, though it appears to be missing a helper function `ofDec'` and has a minor syntax error in `rgbToHex`'s internal `f` function.