Now selected skin depends on selected line in BrowserSim preferences.
In some cases it could be confusing. For example, if user want to edit/remove a skin, but not select it (see discussion at JBIDE-13937).

Some options to avoid accidental skin selection:
1. Do not allow to select a skin in preferences
2. Add a radio button column for skin selection
3. Highlight the selected skin in bold (with a double-click or a "select skin" button)

4QAs
Now skin can be changed in preferences using checkboxes http://snag.gy/hR0zJ.jpg
Selection in table means that this device can be modified.