package main import ( "bufio" "fmt" "image/color" "os" "strings" ) func ParseColors(filename string) (colors map[string]color.RGBA, err error) { var file *os.File if file, err = os.Open(filename); err != nil { return } defer file.Close() colors = make(map[string]color.RGBA) scanner := bufio.NewScanner(file) for scanner.Scan() { line := scanner.Text() if strings.HasPrefix(line, "#") { continue } c := color.RGBA{A: 0xff} var name string if n, _ := fmt.Sscanf( line, "%s %d %d %d %d", &name, &c.R, &c.G, &c.B, &c.A); n > 0 { colors[name] = c } } err = scanner.Err() return }