(optional) The options object for the creation of the dialog. Structure:
     themeId                                         [type: String]      - (optional) The existing theme ID that's being edited. If null,
                                                                             then it's assumed it's a new theme.
     projectId                                       [type: String]      - (optional) The project to use try save this data connector, if not the default one.
 
The following example initializes a new instance of a ThemeDialog object:
var newObject = new dundas.controls.ThemeDialog();