add an attribute Color to a Cutting, save it in ldt xml file and redisplay it in the pivot's button. Make ColorFactory truly static.
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
xmlns:local="clr-namespace:GestureControl"
x:Class="GestureControl.UserGestureControl"
x:Name="UserControl"
d:DesignWidth="640" d:DesignHeight="184">
<local:GestureControl Content="GestureControl"/>
</UserControl>