Hello,
it works when SASSing 1.0.1 before launching it (I stumbled upon this when I first tested 1.0.0 and 1.0.1)
I just wanted to mention the difference between the 1.0.0 and the 1.0.1 download (the latter contains no precompiled theme.css in primefaces-mytheme)
And the Maven plugin is just convenience, I simply deploy my designer warfile to a running tomcat.
Regards,
gun