Hello, thanks for your purchase.
1) First go to our preview at index-corporate-4, change the colors trough style switcher and generate the CSS code:
https://www.okler.net/previews/porto/8.1.0/index-corporate-4.html
2) Paste the new CSS code at “css/skins/skin-corporate-4.css” instead of “css/skins/default.css”. Corporate and niche demos uses different skin files, so it’s needed paste the CSS at respective demo skin file.
Regarding dark layout, you can enable by adding the class dark in the html tag. For example:
<html class="dark">
Please note that maybe will be needed change some text class colors. For example:
Change all “text-color-dark” classes to “text-color-light” (when the text it’s inside a section with dark background)
We hope this helps!
Please try that and let us know if you need further assistance.
Kind Regards,
Rodrigo.
If you are satisfied with Porto HTML and our support, please leave your comment and rating on ThemeForest downloads page. That helps us a lot: https://themeforest.net/downloads