journalofavegan One idea is go to Core’s Less folder. Take the most common CSS/Less out of there. Paste into admin appearance custom CSS box. Start making small changes. Check each change often in at least two different browsers.
https://github.com/flarum/core/tree/master/less/forum
It will be very time consuming especially if you’ve never worked with CSS. But, because it is time consuming, that’s why most won’t do it for free.
