Rumors are rumors and are to be treated as the worthless and devisive objects that they are. They are generally found to not have much if any truth and I, personally, find them to be an utter waste of time and harmful. Like you Thor, I prefer to form my own opinion with personal contact. Those that I come into contact with that insist on continually using rumors in conversation for whatever reason are shown 'the door' as I see them as emotionally and likely intellectually bankrupt. They are not peacemakers, but chaos initiators. I prefer to be around peacemakers. Just my not so humble opinion.
That's actually the first I've heard the deplorable 'skinhead' moniker used here. Can you state a source? No, probably not, thus, the rumor? Acually, I don't care.
However some of us are 'hair challenged'.

So don't confuse an observation like that with any association of that other deplorable word.
At no time in conversation with others at FSW events or in their homes or on the range have I heard overt prejudicial comments. Could there be any such comments and I didn't hear them? Sure, it's possible. If so, I suspect no more so than what you would expect to hear elsewhere. Yes, racism and other negative human behavior does get discussed in objective ways, as it would in many liberty circles, but certainly not in a supportive manner. Could there be closet racists around? Possibly, but I rather doubt it as conversation and sentiment here simply doesn't support that kind of behavior. We have bigger and better things to do with our time, energy and $$.
For the official FSW position, I would suggest you take a look at the FAQ section on the FSW.org site:
http://freestatewyoming.org/free-state-wyoming-faq.html#racial_diversity
Besides, if BTP gets wind of the kind of negative human behavior that you have suggested (as rumor) he'll likely take corrective action quickly and decisively. He's done so on other issues. He is quite protective (and rightly so) of the reputation of FSW.
Thor, hope this helps. Keep in mind, this is just my opinion and experience that I've related to you. I've been around these folks for nearly three years now and have yet to see anything approaching what you had 'heard'.