Bevel Button Background Color

Hello. I am new with Xojo and I am still testing their controls. I have a problem with Bevel Button. When I select Button Style to ToggleButton and Has Background Color to true, when the exe is running, it shows a button with a rectangle of the selected color inside the button, but it doesn’t cover it completely. Is it normal?

I am developing an apllication for Raspberry Pi.

This can probably help:

It runs! Thank you very much.