Thanks, @Ajmal Eylia. I agree that the current link colour is too similar to the body text colour. We've made progress in this respect, though – headings are no longer the same colour (!) as links, and links now have a :focus colour very similar to that used in your style sheet.
We appreciate your suggestion and we agree that the dashboard could certainly use some overhaul.
The plan is to not just make a bunch of little changes but instead to really try to improve the UX of the whole dashboard. I think that the suggested CSS changes are not quite inline with the direction we want to go but rest assured that we will be working on it.