Text Not Legible

Hi,
Since upgrading to 1.1.2 I can’t really read any of the small text.
This is because it’s grey text on a black background which is very hard to read.
How do I change to ‘normal’ viewing e.g. black text on white background?
Legibility is more important to me than design.
See attached.
I looked through themes but all seem to be the same.
Screenshot 2024-05-20 at 09.48.33 1