diff --git a/src/vs/editor/contrib/colorPicker/browser/colorPickerWidget.ts b/src/vs/editor/contrib/colorPicker/browser/colorPickerWidget.ts
index 9e416c5cac35f817cd166d08dd62fd9a579da229..91eb124b9053ddacbc36bee7e8237f85088009e0 100644
--- a/src/vs/editor/contrib/colorPicker/browser/colorPickerWidget.ts
+++ b/src/vs/editor/contrib/colorPicker/browser/colorPickerWidget.ts
@@ -129,7 +129,6 @@ class SaturationBox extends Disposable {
 	private width: number;
 	private height: number;
 
-	private monitor: GlobalMouseMoveMonitor<IStandardMouseMoveEventData>;
 	private _onDidChange = new Emitter<{ s: number, v: number }>();
 	readonly onDidChange: Event<{ s: number, v: number }> = this._onDidChange.event;
 
@@ -155,24 +154,22 @@ class SaturationBox extends Disposable {
 
 		this._register(dom.addDisposableListener(this.domNode, dom.EventType.MOUSE_DOWN, e => this.onMouseDown(e)));
 		this._register(this.model.onDidChangeColor(this.onDidChangeColor, this));
-		this.monitor = null;
 	}
 
 	private onMouseDown(e: MouseEvent): void {
-		this.monitor = this._register(new GlobalMouseMoveMonitor<IStandardMouseMoveEventData>());
+		const monitor = this._register(new GlobalMouseMoveMonitor<IStandardMouseMoveEventData>());
 		const origin = dom.getDomNodePagePosition(this.domNode);
 
 		if (e.target !== this.selection) {
 			this.onDidChangePosition(e.offsetX, e.offsetY);
 		}
 
-		this.monitor.startMonitoring(standardMouseMoveMerger, event => this.onDidChangePosition(event.posx - origin.left, event.posy - origin.top), () => null);
+		monitor.startMonitoring(standardMouseMoveMerger, event => this.onDidChangePosition(event.posx - origin.left, event.posy - origin.top), () => null);
 
 		const mouseUpListener = dom.addDisposableListener(document, dom.EventType.MOUSE_UP, () => {
 			this._onColorFlushed.fire();
 			mouseUpListener.dispose();
-			this.monitor.stopMonitoring(true);
-			this.monitor = null;
+			monitor.stopMonitoring(true);
 		}, true);
 	}
 
@@ -224,9 +221,6 @@ class SaturationBox extends Disposable {
 	}
 
 	private onDidChangeColor(): void {
-		if (this.monitor && this.monitor.isMonitoring()) {
-			return;
-		}
 		this.paint();
 	}
 }