Custom css for each sidebar menu?

Greetings, In our organization, each department has its own color scheme. For instance, some departments have cornsilk background color with green text color; some have blue background color with white text color, etc. Is there any custom css available to help us customize each sidebar? As you know, easy sidebar currently has one css class called widget-title and it is hard to have more than one background color or text. If there is a widget out there that is proven to help solve these sorts of issues, I would greatly appreciate laying a hand on it. Many thanks in advance.