thanks! I working on a styleable Version.
At the moment, go into the plugin-folder “nextgen-scrollGallery” there you will find a folder “css” with the scrollGallery.css. Here you find colors and borders.
But I recommend to override this css classes in your theme "style.css". Because if you make a update of the plugin, the scrollGallery.css will be replaced.
In a month or so, it will also be possible to change the style of the gallery in the admin interface, but therefore I need some more time…
Greetings from Germany BMo