I am investigating the following bug: http://code.google.com/p/anki/issues/detail?id=2593 Some scripts have different glyphs for letters that are connected to their neighbors. These connections are rendered correctly when using a single color, but words with several colors have disconnected letters. A small test-case for which the correct and incorrect renderings are visually quite distinct includes the following HTML: <span style="color:#808080;">ه</span>ه<span style="color:#808080;">ه</span> Shortly, I'll included a screenshot of this snippet being rendered by Webkit incorrectly, and a rendering of the same partially-colored text rendered in LibreOffice. (Firefox also correctly renders this snippet.)