Groups heading too dark to read

[tobiaseigen]

probably a leftover from the dark theme experiments. I can replicate this on my discourse sites too.

[codinghorror (Jeff Atwood)]

aha @techapj can you take a look?

[techAPJ (Arpit Jalan)]

Fixed via:

https://github.com/discourse/discourse/commit/73e6eebde88a99775eb9c6742072ce97194f0550