easy way to change colors of the rounded template?

Is thee an easy way to change the colors of the rounded template? If not, can we get some parameters in the plugin to change the hover and text colors?

For the most part it's using Bootstrap 4 for its colors, which you can generate a custom Bootstrap 4 using CB Template Changer and the below functionality.

www.joomlapolis.com/blog/kyle/18797-template-builder

Some colors are custom however and can be found in the below CSS file.

components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/templates/rounded/override.css

You can modify them then have your modified colors applied using CBs build in template CSS override functionality below.

www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy

There is unlikely to be parameters to generate new CSS. It's a pretty heavy operation to have to do and is why it's contained only in CB Template Changer.