You can customize list markers with options like color, background, border, shape, size, and spacing.
Rectangle
Just set the List Marker Color, List Marker Background and List Marker padding options.
Square
Replace the List Marker Padding option with the List Marker Size setting.
It can also be rounded with the List Marker Radius option.
Circle
Set List Marker Radius to 50%
.
Border
Set the List Marker Border option