src/vs/workbench/electron-sandbox/splash.ts/PartsSplash/_removePartsSplash
class PartsSplash:	private _removePartsSplash(): void {
		const element = document.getElementById(PartsSplash._splashElementId);
		if (element) {
			element.style.display = 'none';
		}

		// remove initial colors
		const defaultStyles = document.head.getElementsByClassName('initialShellColors');
		if (defaultStyles.length) {
			document.head.removeChild(defaultStyles[0]);
		}
	}