SystemColor:
| "AccentColor"
| "AccentColorText"
| "ActiveText"
| "ButtonBorder"
| "ButtonFace"
| "ButtonText"
| "Canvas"
| "CanvasText"
| "Field"
| "FieldText"
| "GrayText"
| "Highlight"
| "HighlightText"
| "LinkText"
| "Mark"
| "MarkText"
| "SelectedItem"
| "SelectedItemText"
| "VisitedText"