message: Color: Adjust toRGB() color mappings to xterm colors.
diff: @@ -110,19 +110,19 @@ RGBColor toRGB(Color const& _color, RGBColor const& _defaultColor)
  case IndexedColor::Black:
  return RGBColor{ 0, 0, 0 };
  case IndexedColor::Red:
  - return RGBColor{ 128, 0, 0 };
  + return RGBColor{ 205, 0, 0 };
  case IndexedColor::Green:
  - return RGBColor{ 0, 128, 0 };
  + return RGBColor{ 0, 205, 0 };
  case IndexedColor::Yellow:
  - return RGBColor{ 128, 128, 0 };
  + return RGBColor{ 205, 205, 0 };
  case IndexedColor::Blue:
  - return RGBColor{ 0, 0, 128 };
  + return RGBColor{ 0, 0, 238 };
  case IndexedColor::Magenta:
  - return RGBColor{ 128, 0, 128 };
  + return RGBColor{ 205, 0, 205 };
  case IndexedColor::Cyan:
  - return RGBColor{ 0, 128, 128 };
  + return RGBColor{ 0, 205, 205 };
  case IndexedColor::White:
  - return RGBColor{ 128, 128, 128 };
  + return RGBColor{ 229, 229, 229 };
  case IndexedColor::Default:
  return _defaultColor;
  }
  @@ -139,7 +139,7 @@ RGBColor toRGB(Color const& _color, RGBColor const& _defaultColor)
  case BrightColor::Yellow:
  return RGBColor{ 255, 255, 0 };
  case BrightColor::Blue:
  - return RGBColor{ 0, 0, 255 };
  + return RGBColor{ 92, 92, 255 };
  case BrightColor::Magenta:
  return RGBColor{ 255, 0, 255 };
  case BrightColor::Cyan:
  