Hidden color picker brush

src/PixiEditor/ViewModels/Tools/Tools/ColorPickerToolViewModel.cs

@@ -28,7 +28,7 @@ internal class ColorPickerToolViewModel : ToolViewModel, IColorPickerHandler
     public override bool UsesColor => true;
 
     public override string ToolNameLocalizationKey => "COLOR_PICKER_TOOL";
-    public override BrushShape FinalBrushShape => BrushShape.Pixel;
+    public override BrushShape FinalBrushShape => BrushShape.Hidden;
 
     public override string DefaultIcon => PixiPerfectIcons.Picker;