Stylesheet for QRadioButton

[Milica]

I want to add a stylesheet to a QRadiobutton. Want that black dot to be some other color, example red.
But if i try this:

QRadioButton::indicator::checked
{
border:1px solid black;
border-radius: 8px;
background-color: red;
};

the white space between border and dot disapears.

[Chris Kawa]

The black dot is an image so you can't change its color. What you have above has replaced the image with a solid color.

If you want a red dot you need to provide an image with it and use background-image.
Another way is to provide a clever radial gradient that will draw the dot as background, e.g.

background: qradialgradient(cx:0, cy:0, radius: 1, fx:1, fy:1, stop:0.25 red, stop:0.3 white)