Hi minati,
The default status graphic that you have is actually an image, so there would be no way to change it via just CSS. One thing you might be able to do is just swap out the images used to build the graphic for your own images. The images used are called Default.png and Default_Full.png and are found in the images folder. It would definitely take some trial and error to line everything up, though, and that is not something we could assist with as that kind of plugin customization goes beyond the scope of our support
As far as the minimalist graphic option you referenced from the demo, the extra graphic options included in our plugin are actually part of the premium version of the plugin. The www.ads-software.com forums are meant for questions about the free version of this software. As such, please contact us directly by email or visit our website, and we’d be happy to assist you in using the premium version.