Hi

I have wordpress 3.0.1 and atahualpa 3.4.9.

I need to change the background of only one widget. This link widget has the categories list of a second blog.

Is there a way in atahualpa to do this ?

This isn't an Atahualp issue. You have to determine the specific CSS selector for the widget in question and style it with CSS.

Thanks for the idea. I found a plugin for this.
You can close this ticket.

What was the plugin?

This is the plugin :

http://wordpress.org/extend/plugins/mycustomwidget/