Neopets Dark is a userstyle that works for the latest Neopets site, but it doesn't have to be "dark". You can customize it as you wish.

First, install Stylus for your browser: Firefox, Chrome and Edge

Stylus is a "recommended" Firefox add-on and a "featured" Chrome extension. Stylus works the same way you customize your userlookup: with CSS. It is safe to use and poses no risk to your account.

Install the style on this page. The "install" button is under the image. Alternatively, click here to install it directly.

When you install the style, you'll be given options to customize it.

These options are saved even if the style is updated (automatic updates should be enabled, as this style is a work-in-progress).

These options can easily be changed later:

The userstyle will NOT style userlookups, user galleries, petlookups, or ~petpages, but it will style user shops.

Updates are made as I use the site and find pages that need tweaking. I have made effort to style a good amount of pages, but there may be un-styled elements. Contact me if you have an issue.