src/vs/workbench/services/themes/browser/workbenchThemeService.ts/WorkbenchThemeService/setColorTheme
class WorkbenchThemeService:	public setColorTheme(themeIdOrTheme: string | undefined | IWorkbenchColorTheme, settingsTarget: ThemeSettingTarget): Promise<IWorkbenchColorTheme | null> {
		return this.colorThemeSequencer.queue(async () => {
			return this.internalSetColorTheme(themeIdOrTheme, settingsTarget);
		});
	}