[Bug 42210] New: Dialogs have gray background instead of COLOR_WINDOW

https://bugs.winehq.org/show_bug.cgi?id=42210

Bug ID: 42210
           Summary: Dialogs have gray background instead of COLOR_WINDOW
           Product: Wine
           Version: 2.0-rc5
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ArchLinux

Created attachment 56850
  --> https://bugs.winehq.org/attachment.cgi?id=56850
Test program to show the issue

Dialogs always have a gray background and ignore COLOR_WINDOW.
Even if COLOR_WINDOW is white or blue, the dialog background is grey.

Testprogram attached.