CSS Tag Cloud Widget?

You might try this plugin:
https://reciprocity.be/ctc

I couldn’t seem to find a way to configure the default tag cloud with the colors/sizes/etc. that I wanted but this plugin allows you to do so. It’s very easy to install and use.

Just for information, also see Trac Ticket 5191.

Thanks for the link to the CTC. It is great!

You can style the tag cloud using css with something similar to the following:

#tag_cloud a {
font-family:Trebuchet MS, Arial, sans-serif;
font-weight:normal;
text-align:center;
}
#tag_cloud {
text-align:center;
}