Hi Jim,
First some specifics, then some general advice.
a) To change the browse greenbar, and highlight colors, see the "CSS Classes" tab on the NetWebBrowse settings.
>> What would be really helpful (to me) would be an idiot's guide that shows what part of the css file controls what part of the application. IOW: You can change the page bg color here. Change the Table's bg color here, etc.
All of the templates have a CSS Classes tab which lets you set all the CSS classes used by that procedure. The best way to see the effect of the classes, and their settings, is to run using the firefox browser (
www.getfirefox.com) and add too that the FireBug extension (
www.getfirebug.com). This allows you to literally use the mouse over the page to see the CSS in action. You can even change it in real-time to see the effect it'll have.
This thread covers some aspects of editing style files
http://www.nettalkcentral.com/index.php?option=com_smf&Itemid=36&topic=116.0This thread talks about the compression of style files.
http://www.nettalkcentral.com/index.php?option=com_smf&Itemid=36&topic=157.0That takes care of the visual aspects of CSS - which is highly compatible across all browsers.
Now let's talk about centering the browse. This is possible to do using CSS, but I should warn you that it's probably not a good idea. The "Positional layout" aspects of CSS are not terribly compatible between browsers, and can lead to major headaches down the road. For now I'd recommend concentrating on the functionality, and "look" of your site, and don't get too bogged down with the "position" of standard items.
Cheers
Bruce