Hello,
I'm adding new styling options over time - rather slowly.
However recently I've added option to load your own CSS styles - in Options page / "Custom CSS styles:".
This enables you to make all the changes you mentioned. However it requires some CSS knowledge...
I will create some examples so that it's easy for users to start. Like that ".dials > a > div > div > span { font-weight: bold; }" will make dials name "bold" (changing styles on ".dials > a" and ".dials > a > div" is what you are probably looking for).

One last thing - soon after I finish current big server upgrade, users will be able to share their custom themes. So soon you should be able to choose from a lot of themes :)

Best regards,
Juraj Mäsiar