Hi,
1) with regard to your own templates:
Sitebuilder 4.0 Template Creation Guide
ftp://download1.swsoft.com/SiteBuilder/4.0.0/doc/templates/en_US/html/index.htm
Here you can find documentation for building your own templates for SiteBuilder.
Additional info on Templates:
http://kb.swsoft.com/en/products/sitebuilderlinux/category135
SiteBuilder / Sitebuilder for Linux/Unix / Templates
2) as for the advanced customization:
Customizing Appearance of Sitebuilder Modules
ftp://download1.swsoft.com/SiteBuilder/4.0.0/doc/templates/en_US/html/index.htm
Also there is this article:
http://kb.swsoft.com/en/833
How are we able to modify the font size, color etc... within the modules, for example, the blogger module?
It is referring to the style sheet file 'style.css' for respective modules. As far as I can see on my SB installation, there many such files within SB:
> find /usr/local/sitebuilder/ -iname style.css
/usr/local/sitebuilder/htdocs/skins/PleskClassicSilver/style.css
/usr/local/sitebuilder/htdocs/skins/WinXPReloadedCompact/style.css
/usr/local/sitebuilder/htdocs/skins/PleskBlue/style.css
/usr/local/sitebuilder/htdocs/skins/WinXPBlue/style.css
/usr/local/sitebuilder/htdocs/skins/WinXPSilver/style.css
/usr/local/sitebuilder/htdocs/skins/PleskNature/style.css
/usr/local/sitebuilder/htdocs/skins/PleskViolet/style.css
/usr/local/sitebuilder/htdocs/skins/LonghornYellow/style.css
/usr/local/sitebuilder/htdocs/skins/PleskSilver/style.css
/usr/local/sitebuilder/htdocs/skins/LonghornBlack/style.css
/usr/local/sitebuilder/htdocs/skins/WinXPOlivegreen/style.css
/usr/local/sitebuilder/htdocs/skins/PleskReflections/style.css
/usr/local/sitebuilder/htdocs/skins/AquaCompact/style.css
/usr/local/sitebuilder/htdocs/skins/LonghornAero/style.css
/usr/local/sitebuilder/htdocs/skins/PleskSea/style.css
/usr/local/sitebuilder/htdocs/ServiceFacade/style.css
/usr/local/sitebuilder/htdocs/ServiceFacade/4.0/style.css
It is my understanding that these .css files can also be modified.
Hope this helps a bit.