Customizing plugin…

Hello! I have just gotten Rumwall installed successfully, and I figured out how to style the button how I wanted, but now I was wondering how to change the styles of the tags/posts themselves… whether to add shading to every other one, or change the font of the name of the poster, or the order of the top line… any of that possible?

Here is my wall – https://www.jaqyshome.com/blog/wall.php