Even with the help of [tile], Tk applications do not yet look fully native out of the box. It is, however, possible to improve the look of the default widgets with careful settings. This page collects some of them:

* White border around Tk widgets : Some Tk widgets that do not yet have a [tile] equivalent, such as [tk_optionMenu], display a white border around them that make them stand out against regular OSX pinstripe background. It is possible to minimize this effect with : -borderwidth 0 -bg #ececec