user32: Use COLOR_BTNFACE to fill scroll bar background.

dlls/user32/nonclient.c

@@ -1073,7 +1073,7 @@ static void  NC_DoNCPaint( HWND  hwnd, HRGN  clip )
         else
             r.left = r.right - GetSystemMetrics(SM_CXVSCROLL) + 1;
         r.top  = r.bottom - GetSystemMetrics(SM_CYHSCROLL) + 1;
-        FillRect( hdc, &r,  GetSysColorBrush(COLOR_SCROLLBAR) );
+        FillRect( hdc, &r, GetSysColorBrush( COLOR_BTNFACE ) );
     }
 
     ReleaseDC( hwnd, hdc );

dlls/user32/scroll.c

@@ -585,7 +585,7 @@ void WINAPI USER_ScrollBarDraw( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTES
         {
             RECT rc = *rect;
 
-            FillRect( hdc, &rc, GetSysColorBrush( COLOR_SCROLLBAR ) );
+            FillRect( hdc, &rc, GetSysColorBrush( COLOR_BTNFACE ) );
             rc.left = max( rc.left, rc.right - GetSystemMetrics( SM_CXVSCROLL ) - 1 );
             rc.top = max( rc.top, rc.bottom - GetSystemMetrics( SM_CYHSCROLL ) - 1 );
             DrawFrameControl( hdc, &rc, DFC_SCROLL, DFCS_SCROLLSIZEGRIP );
@@ -594,7 +594,7 @@ void WINAPI USER_ScrollBarDraw( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTES
 
         if (style & SBS_SIZEBOX)
         {
-            FillRect( hdc, rect, GetSysColorBrush( COLOR_SCROLLBAR ) );
+            FillRect( hdc, rect, GetSysColorBrush( COLOR_BTNFACE ) );
             return;
         }
     }

dlls/user32/tests/scroll.c

@@ -802,7 +802,7 @@ static void test_visual(void)
 
         hdc = GetDC(hwnd);
         color = GetPixel(hdc, 5, 5);
-        todo_wine_if(styles[i] == SBS_SIZEBOX || bThemeActive)
+        todo_wine_if(bThemeActive)
         ok(color == colors[1], "Expected color %#x, got %#x.\n", colors[1], color);
 
         ReleaseDC(hwnd, hdc);