@type t() :: %WplAi.AST.Rendering{
  accent_color: String.t() | nil,
  difficulty_colors: %{required(String.t()) => String.t()} | nil,
  icons: %{required(String.t()) => String.t()} | nil,
  primary_color: String.t() | nil,
  secondary_color: String.t() | nil
}