Biography font choice and colour?

Of course! You’ll want to use a Custom CSS Plugin to make these changes if this is not a custom/child theme.
For the tag line, you’ll need to change this:

#site-description {
    color: #FFFFFF;
}

For the bio, you’ll need to change this:

#author-bio {
    color: #FFFFFF
}

Add in whatever font-family you want to each and you should be set (as long as it’s a web safe font). If you want to use a custom font, that’s more complicated.

Hope this helps.

Worked like a charm, I installed Simple Custom CSS to make the change.
Thanks for the help!