Yes, in the settings of the module you can see a field, called 'Module Class Suffix'. If you type there for example -breadcrumbs, this should be in the css:
Code:
(dot)module {
background-color: white;
}
(dot)module-breadcrumbs{
background-color: black;
}
In this example .module is the default module style, and you can see the other one uses the -breadcrumbs suffix.