A colour reference from the OOXML style model. Colours can be declared as a concrete RGB value, a reference to a theme palette entry, or a reference to the legacy indexed palette.
Summary
Types
@type kind() :: :rgb | :theme | :indexed | :auto
@type t() :: %ExVEx.Style.Color{ kind: kind(), tint: float() | nil, value: String.t() | non_neg_integer() | nil }