Include wx/colour.h according to precompiled headers of wx/wx.h (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39724 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/colour.cpp

@@ -12,12 +12,12 @@
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
-#include "wx/colour.h"
-
 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
 
+#include "wx/colour.h"
+
 #include "wx/gdicmn.h"
 #include "wx/msw/private.h"