Style selectors not working as expected

[aitchDashGee]

Hi!

Specifying the following:

    new Style<Button>(x => x.Class(":pointerover"))
        .Background(Brushes.LightBlue),

Leads to every control with the pointer over changing their colors to light blue.

This happens both in Component.BuildStyles() and Control.Styles().

I've tested with several versions, the latest being 11.2.0-beta4

PS! I really like this approach to building UIs. :)

[aitchDashGee]