You can now order variations by typing them into the variations tab box in order separated by a | character. See this post at woocommerce forums http://www.woothemes.com/support-forum/?viewtopic=64296
You can not do this in the Abundance theme because the cool interface uses little boxes with the variation names. These revert to alphabetical order when saved. I tried adding | between them it did not allow it. Can this be fixed? Variation order is a big deal. Seems to be a case where cool interface is a hindrance not a benefit.
see these images
Right now my variations in the drop down on the single product page appear as