It too longer than what I anticipated, but Python for the Lab has a complete new look.
Also, I've changed the backend. Went from a static website to a Django solution, using Wagtail, which is, by the way, open source. I am self-hosting comments and newsletter, mainly because I wanted to understand how simple/complicated it is.
The design of the website was done by Tsvetelina Stoynova, so if you are looking for a designer, you can contact her.