Hello zameer,
Thank you so much for using our theme Acme Photo. You can easily make the site as our demo, but if you need any additional functionality or design, you need to customize the theme. The list of categories are available on the premium version of theme and the border color can remove if all the entity there are hide on the pro features. Hope, you will get the more options to customize the site through premium theme.
Let us know, if you have any confusion.
Warm Regards