I need a better theme

I don’t know very much about themes, but I know that I need a better one. I’d like it to have these attributes:

  • Relatively simple, without loud colors or distracting graphics
  • Looks more or less the same at any font size (I’ve seen a *lot* of tumblr themes that become illegible if you increase the font size)
  • Showing tags on posts
  • Showing notes on posts if you’re on that post’s page
  • The kind of interface that makes it easy to like and reblog posts even if you aren’t on that post’s page
  • A tag cloud
  • Maybe displaying recent tweets. I have mixed feelings about whether I like that feature

Do any of y'all have suggestions?