The new default theme of WordPress, TwentyTen (or 2010, as you prefer), I think we have convinced almost everyone, has gained in breadth, clarity of content and customization possibilities, but It suffers from design change options, however basic they may be.
Of course you can play the CSS and make a spawn that neither your father recognizes it, but what do you think of a settings page? to change its appearance?
Nothing, well said and done, you just have to installa child theme ("child theme") that, through (of which I think we are going to talk a lot soon), offers you configurations so that change colors by default and more things without touching a line of code .
Here you have some captures of the new possibilities of adjustments you can apply: