Yes, they are hellip, with a few exceptions.
Some things in WinForms are custom made. They use their own control, but they include drawing the owner and handle part of the drawing logic inside the C # code. The advantage of this is that it allows the use of type buttons BackColor, such as buttons that support custom color instead of the standard color of the system. As a rule, this should be avoided (at least in my opinion), because not only the effect is ugly, probably the reason why the user chose the color scheme that they made. But graphic designers often believe that they know better than users, so an option exists.
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