`module RGBA : sig ... end`
`type simple` = `[`

`|` ``Black`
`|` ``Blue`
`|` ``Brown`
`|` ``Yellow`
`|` ``Cyan`
`|` ``Green`
`|` ``Grey`
`|` ``Magenta`
`|` ``Purple`
`|` ``Red`
`|` ``White`
`|` ``SteelBlue`
`|` ``Honeydew`
`|` ``Whitesmoke`
`|` ``LawnGreen`
`|` ``GoldenRod`
`|` ``DarkGreen`
`|` ``DarkMagenta`
`|` ``DarkRed`

`]```
`include sig ... end`
`val simple_of_sexp : Base.Sexp.t ‑> simple`
`val __simple_of_sexp__ : Base.Sexp.t ‑> simple`
`val sexp_of_simple : simple ‑> Base.Sexp.t`
`val bin_simple : simple Bin_prot.Type_class.t`
`val bin_read_simple : simple Bin_prot.Read.reader`
`val __bin_read_simple__ : (int ‑> simple) Bin_prot.Read.reader`
`val bin_reader_simple : simple Bin_prot.Type_class.reader`
`val bin_size_simple : simple Bin_prot.Size.sizer`
`val bin_write_simple : simple Bin_prot.Write.writer`
`val bin_writer_simple : simple Bin_prot.Type_class.writer`
`val bin_shape_simple : Bin_prot.Shape.t`
`val compare_simple : simple ‑> simple ‑> int`
`type t` = `[`

`|` `simple`
`|` ``RGBA of RGBA.t`
`|` `css_global_values`

`]```
`include sig ... end`
`val t_of_sexp : Base.Sexp.t ‑> t`
`val __t_of_sexp__ : Base.Sexp.t ‑> t`
`val sexp_of_t : t ‑> Base.Sexp.t`
`val bin_t : t Bin_prot.Type_class.t`
`val bin_read_t : t Bin_prot.Read.reader`
`val __bin_read_t__ : (int ‑> t) Bin_prot.Read.reader`
`val bin_reader_t : t Bin_prot.Type_class.reader`
`val bin_size_t : t Bin_prot.Size.sizer`
`val bin_write_t : t Bin_prot.Write.writer`
`val bin_writer_t : t Bin_prot.Type_class.writer`
`val bin_shape_t : Bin_prot.Shape.t`
`val compare : t ‑> t ‑> int`
`val to_string_css : t ‑> string`