Hi, since new paradigm conserning Custom Pseudo Elements have been introduced http://lists.w3.org/Archives/Public/public-webapps/2013AprJun/0985.html (part 5)
I'd like to suggest few additions/changes: 1/ ability to style nested shadow dom elements 2/ change of part attribute from DOMString to DOMTokenList 3/ ability to create complex selectors using ::part the description/reasoning for this can be found here: http://projects.webnt.eu/spec/shadow/index.php In case ::part will not be in spec, the same still applies to pseudos Bronislav Klucka
