package main

import "fmt"

func uintToHex(v uint32) string {
        r := fmt.Sprintf("%X", v)
        if len(r) >= 2 {
                return r[0:2]
        }
        return r
}

func rgbToHex(r, g, b uint32) string {
        return fmt.Sprintf("%s%s%s", uintToHex(r), uintToHex(g), uintToHex(b))
}