For example, what happens if you want to change the current loud shade of red to a slightly more muted shade #f44? You might think that you need to edit each label and change each background property from red to #f44. For three labels, this is easy. For 300 labels, it becomes very difficult and repetitive.

Px Properties allow you to share attributes across many widgets and enable you to quickly and easily make sweeping changes across your Px pages. Using Px Properties, you can make just one edit to your Px page and instantly change the backgrounds of all 300 labels.