type color = Melange_wrapper.Misc.Color.color = | Black| Red| Green| Yellow| Blue| Magenta| Cyan| White
type style = | FG of color| BG of color| Bold| Reset| Dim
val ansi_of_style_l : style list -> stringval get_styles : unit -> stylesval set_styles : styles -> unittype setting = Melange_wrapper.Misc.Color.setting = | Auto| Always| Never