For some reason, I quite like the default colours - http://travel-pics.artistwebsites.com/
At least it looks clean.
I might blue it up a little; but unless all sections can be customised, the balanced 'look' fails.
I'm not too keen on the big footer block that so many blog templates seem to have designed into them, but I don't think there's much we can do there.
The 'Artist Websites powered by Pixels.com' at the bottom is not very professional, especially if we're using a CNAME with our own domain URL.
If it must stay, that slug should at least be in a smaller font size. Ideally the Artist Websites link would have an affiliate referral added to it and the Pixels link go to the artist's pixels URL. But it's all duplicate content whichever way we look at it.
While we're on the Artist Websites theme, I notice clicking on the gallery name doesn't work (on pixels.com it does).