func (c Color) Add(s string) string {
	return fmt.Sprintf("\x1b[%dm%s\x1b[0m", uint8(c), s)
}
Add adds the coloring to the given string.
package color
import "fmt"
const (
	Black Color = iota + 30
	Red
	Green
	Yellow
	Blue
	Magenta
	Cyan
	White
)
type Color uint8