How to add a background color to any control

Not all controls have a background color property so here is a quick way to add it to any control (or part of control):

1. Add a Rectangle control and make it borderless from the Property Inspector
2. Set the background color to the desired one
3. Set its opacity to 25%
4. Move and resize the rectangle to overlay your other control (Data Grid in this case)
5. Group the controls together

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You can also set up a border color the same way if needed.