[Pharo-project] Polymorph and OB Browser Colors Quick Solution

I know OB has some issues with the Polymorph themes such that you are always left with the standard browser window color border in the window panes of an OB Browser. At any rate, a simple "Preferences setPreference: #browserWindowColor toValue: (Color r: 0.815 g: 0.811 b: 0.811)" seems to set it to a decent color for the Watery2 or Watery theme, but I was wondering if there is a better place to set something like this more...dynamically...when different themes are chosen. Thanks, Rob