Update type spec for IEx.color to indicate that it works with iodata (#9967)
Update type spec for IEx.color to indicate that it works with iodata (#9967)

This fixes a few dialyzer errors, e.g. in IEx.Introspection.open/1
or in IEx.Helpers.print_pane/1
kimshrier/elixir,pedrosnk/elixir,elixir-lang/elixir,joshprice/elixir,kelvinst/elixir,ggcampinho/elixir,kimshrier/elixir,pedrosnk/elixir,michalmuskala/elixir,ggcampinho/elixir,kelvinst/elixir