How to fill color in checkbox and set the height and widht of checkbox in xamarin forms?

I am wokring in xamarin forms. I am using checkbox. I want to fill the color in checkbox and need to change the size of it. But when I am trying to set its HeightRequest and WidthRequest its not working. And also if I am trying to set its background color its also showing outside of it.

Please tell me how I can fill color in checkbox and can change the height and width?

Regards, Anand Dubey