Josh:
It appears that you can set a skin to the text that is displayed alongside the checkbox in the RadListBox. This is done by setting the
SkinID="Black" property at design time.
I did not find a way to set a skin for the checkbox itself.
Default.aspx:
But, you can also fine tune the display of the checkbox and the text by applying CSS, as follows:
You can reference the classes of the RadListBox on the CSS Skin File Selector documentation page.
Hope this helps!