I logged on to Gmail this evening after basketball and noticed something different: The labels looked nicer. According to the Gmail blog, there's been a change:

Today, we're happy to announce the next evolution of labels: the colored label. Until now the label has been a little inconspicuous creature, subtly suggesting categorical associations in its simple green coat. Oh, we've seen the colored label here and there, its precursors surfacing in various experiments and Greasemonkey scripts; but the label has never before been so brazen, so bold. How will it use its new colors? Will it disguise itself with the chameleon's camouflage or clamor for attention with the monarch butterfly's vivid contrast?

Several new features we've launched, including colored labels, only work in the newest version of Gmail, currently available for IE7 and Firefox 2. Please upgrade your browser to start using those features now.

To be clear, they're not just colored, they're also far more attractive than they used to be. Very nice.