I am trying to follow http://primefaces.org/themes to get it working.
All community themes are also available in \"all-in-one\" package.
You must add repositories:
<repositories>
<repository>
<id>prime-repo</id>
<name>PrimeFaces Maven Repository</name>
<url>http://repository.primefaces.org</url>
<layout>default</layout>
</repository>
</repositories>
Version 1.0.10 does not seem to be available at the moment. You can follow this link to see the latest version: http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.primefaces.extensions%22%20AND%20a%3A%22all-themes%22
I had this same issue. I fixed it by changing my dependency in my pom.xml file to:
<dependency>
<groupId>org.primefaces.extensions</groupId>
<artifactId>all-themes</artifactId>
<version>1.0.8</version>
</dependency>
Because version 1.0.8 is the latest version I got what I needed. The only difference between what I have and what you have is the the groupId. After changing your groupId and doing a Maven update it worked fine.