The UI design was typical of the 2021 era—dark mode with neon accents (often purple and pink).
This blog post showcases the script for Roblox, specifically the popular version from 2021. Roblox Script Showcase: Neko Hub (2021 Edition)
For 2021 standards, the UI was actually pretty clean. A lot of hubs from that era were cluttered messes with clashing colors, but Neko Hub R36 went for a more minimal, darker aesthetic. It was easy to navigate, the tabs were labeled correctly, and it didn’t take up half your screen. It had that distinctive "cat girl" branding which made it recognizable, even if it was a bit generic.
Scripts that offered enhanced or unique game mechanics, such as advanced player movement, custom event handling, and more.