The slack link changes every 30 days. That is why we have it in a single location on the README.md file.
We decided against a dark theme earlier this year as it required us to re-design images to be compatible. It also meant that every PR would have to be tested against the dark theme. For documentation, we also felt that it was not a priority.
Describe the solution you'd like
Potential internship candidates Please read this if you are planning to apply for a Palisadoes Foundation internship https://github.com/PalisadoesFoundation/talawa/issues/359