Jabbrwokk's Journal: Gmail gets themes, new default colours

Suddenly my Gmail account has coloured bars - and themes like iGoogle! They look good, I've never much liked the default Gmail theme and I am looking forward to picking something that's more my style.

There's now a themes tab in settings for my account. How new is this? I just noticed it today. Did this just get turned on?

UPDATE: "Shiny" theme for me. And here's the link that explains more.