Product Disrupt might be a bit more popular than Slack Themes. We know about 1 link to it since March 2021 and only 1 link to Slack Themes. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Check out https://slackthemes.net/ for some ideas. You can the copy paste the values to your preferences in Slack to make use of theme. Source: about 3 years ago
Product Disrupt - Curated List of Resources to Learn Product Design. Source: almost 3 years ago
Sweet Themes - Color Themes for Slack
Design Principles - An open source repository of design principles and methods
Best Of Themes - The simplest way to browse thousands of website themes
Colorbox.io - Create accessible color systems 🎨
Branded Slack Themes - 1,000+ themes to customize your Slack
Checklist Design - The best UI and UX practices for production ready design.