src/vs/editor/standalone/browser/standaloneThemeService.ts/StandaloneTheme/type
class StandaloneTheme:	public get type(): ColorScheme {
		switch (this.base) {
			case VS_THEME_NAME: return ColorScheme.LIGHT;
			case HC_BLACK_THEME_NAME: return ColorScheme.HIGH_CONTRAST_DARK;
			case HC_LIGHT_THEME_NAME: return ColorScheme.HIGH_CONTRAST_LIGHT;
			default: return ColorScheme.DARK;
		}
	}