src/vs/editor/contrib/colorPicker/colorDetector.ts/ColorDetector/removeAllDecorations
class ColorDetector:	private removeAllDecorations(): void {
		this._decorationsIds = this._editor.deltaDecorations(this._decorationsIds, []);
		this._colorDecoratorIds = this._editor.deltaDecorations(this._colorDecoratorIds, []);

		this._decorationsTypes.forEach(subType => {
			this._codeEditorService.removeDecorationType(subType);
		});
	}