[Mono-winforms-list] Theme selection

[George Giolfan]

Currently ThemeVisualStyles is selected if Application.RenderWithVisualStyles returns true. However the user can switch to a Windows theme that uses Visual Styles after the application has started. Can the MWF theme be changed after it was first selected?
The alternative would be to select ThemeVisualStyles regardless of whether Visual Styles is currently enabled, and have it fall back to ThemeWin32Classic whenever Visual Styles is disabled.