By default, the Seated tours widget will intelligently match some of the style of your website. You can also manually customize any attribute of the Seated widget css styling.
In order to customize your widget styling, you will have to edit the code on your website, just as you did to install the Seated widget. If you're not sure how to do that, you can refer back to the article on Installing Seated on your Website.
Examples of Common Customizations
I want to...
Switchfoot and O.A.R are both great examples of extensive custom styling.
Here is a full list of all the stylable elements of your Seated tour listings if you want to go crazy.