pydata/pandas — pull request #7338 by hmeine (2014-06-04 14:33:26+00:00)
Title: add class=„pandas-empty“ to NaN-cells’ HTML

This PR is related to #5330, but is much simpler. There is no new API, this just allows styling empty cells using CSS, e.g. using
td.pandas-empty { color: #eee }
to de-emphasize, or
td.pandas-empty { background-color: yellow }
to let empty cells stand out.