message: Color: be more verbose in to_string(IndexedColor)
diff: @@ -41,7 +41,7 @@ string to_string(IndexedColor color)
  case IndexedColor::Default:
  return "DEFAULT";
  }
  - return fmt::format("{}", static_cast<unsigned>(color));
  + return fmt::format("IndexedColor:{}", static_cast<unsigned>(color));
  }
  string to_string(BrightColor color)
  