Sorry, I am not very used to forums, so I made some errors in the above post and I ended up cut and pasting the wrong version of the patch instead of the one of the version I am testing… some notes:
1) in the patch var cgc = ts.p.colModel.name should be ts.p.colModel.colclass
2) I added a ui-column class to each column… this was more of a test, not sure it is useful
3) It is probably good to always add special css classes to the first and last column, since they are useful to customize css borders