I wonder where you got these from?  One thing I noticed was that when I come to the forum not logged in it uses the DotNetNuke blue theme.  I just registered and when i come to it, it shows DNNSilver.  Not sure if you are aware of this.  It is because the configuration is set to DotNetNuke theme and the new default is DNNSilver.  You also have enable user themes selected.  This is fine, just making sure you are aware.