Hi LRC,
You can edit the styles for a document, which will change the look of your Gantt shapes in a central fashion, but on a per-document basis.
Once you change the styles, you can save your document as a new template (.vst) and start from there each time.
To edit styles, do this:
1. Go to the Tools > Options > Advanced menu
2. Check Run in developer mode
3. Now go to: Format > Define Styles
4. You can edit styles here
To find out which styles are applied to a shape, select the shape, then go to Format > Style
Hope this gets you going!
- Chris