Modify Colors and suffixes in Modules?

Hi,
1. where do the modules get their background colors (and bordercolors) from? Can I change them?
2. What do module suffixes mean? Sometimes I find them in the templates. How can I use these? Is there a description?

Thks Greetings Helmer

1. Most of modules have transparent color, bcg is from containers, and you can control that using template parameters or if you use pre-defined style you can edit /styles/styleX.php where X is number of your style.

2. Module suffix is added to module class like this:

<div class="moduletablesuffix"...

you can do this trick with it:

example: suffix=" red round"

then you can style module like this:

DIV.red{
....
}

DIV.round{
....
}