We have moved to and suggest using the Omega theme, if you would like to pick up development please contact me.
A ‘tiny screen first’ base theme.
‘320 and Up’ prevents mobile devices from downloading desktop assets by using a tiny screen’s stylesheet as its starting point. Try the demo site at different window sizes and on different devices to see it in action.
Update of Dec 1, 2013
Although I do not exactly intend to support this theme per se, I made fixes as I had to do them to use the theme for one of my clients Philippa Lodge. You still have to edit the theme to make it work for your special case. But already as it is it works on Smart Phones and Desktops.
This Drupal theme is based on 320 and up by Andy Clarke.