I may order plain windows and add these myself! Save money, Mullions between glass can look tacky, No limit to design, Change when you like, Can make removeable for cleaning. Tutorial: Custom Window Mullion Grids - The Rozy Home on
Or, in our case add them. We had our house built and I couldn't believe it when we moved in and had no window sills and only 7 foot ceilings. This is going to be my honey do project for 2015 (eek, I have 10 front windows alone!
Don't use the brown wood filler on white trim - use white paintable door, window and trim caulk to fill our cracks and nail holes (Dap brand is among the easiest to work with). For when I finally get around to this daunting project