Currently, the design of picowiki is minimal and I intend on it to stay that way. The main goal is to make it functional first with a touch of pretty. I am hoping to make some tweaks to make it easy and pleasant to read (incl. dark mode).
In addendum to the above, I believe it is very important for the content to be easily readable and easy on the eyes in the event of prolonged usage.
For the time being (February 3rd 2021) I went with colors resembling printed books:
page-background: #f7f1e9
page-text: #444444
links: #ab0000
font: Helvetica, serif