src/vs/editor/standalone/browser/toggleHighContrast/toggleHighContrast.ts/ToggleHighContrast/run
class ToggleHighContrast:	public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
		const standaloneThemeService = accessor.get(IStandaloneThemeService);
		if (isHighContrast(standaloneThemeService.getColorTheme().type)) {
			// We must toggle back to the integrator's theme
			standaloneThemeService.setTheme(this._originalThemeName || 'vs');
			this._originalThemeName = null;
		} else {
			this._originalThemeName = standaloneThemeService.getColorTheme().themeName;
			standaloneThemeService.setTheme('hc-black');
		}
	}