src/vs/editor/contrib/colorPicker/browser/colorDetector.ts/ColorDetector/updateDecorations
class ColorDetector:	private updateDecorations(colorDatas: IColorData[]): void {
		const decorations = colorDatas.map(c => ({
			range: {
				startLineNumber: c.colorInfo.range.startLineNumber,
				startColumn: c.colorInfo.range.startColumn,
				endLineNumber: c.colorInfo.range.endLineNumber,
				endColumn: c.colorInfo.range.endColumn
			},
			options: ModelDecorationOptions.EMPTY
		}));

		this._decorationsIds = this._editor.deltaDecorations(this._decorationsIds, decorations);

		this._colorDatas = new Map<string, IColorData>();
		this._decorationsIds.forEach((id, i) => this._colorDatas.set(id, colorDatas[i]));
	}