Excellent post, this, very interesting comments by all.
Unless we work in a hippy commune, what we wear to work is usually specified by our employer, not ourselves. Why? Because the company is concerned about image, and what our clothes say about us. That's why you will never see an unkempt receptionist (or you shouldn't). She is the front face for the company, and how she appears is representive of the company's values. Because of this, she may not be allowed to wear just anything she likes. They will have certain expectations, because of how outsiders will perceive the company to be, through the image the first point of contact gives.
Now, many people will be looking first at the appearance of the protesters at the Silentlambs march. Primarily will be the Bethelites looking outside their windows. Secondly, will be the media crews. Thirdly will be the onlookers, and also the JWs who will see pictures of the protesters from the media or other venues (perhaps by Bethel taking photos of their own).
Now the media won't really care if you have a tattoo on your arm, or if you have dyed your hair blue.
But the JWs will.
Like it or not, their mindset is such that they will look at the clothes and appearance first, your message second.
So I would appeal to those protesting to consider what their appearance will say to JWs. Will it say "I'm a bum who doesn't give a stuff about my appearance", or will it say "I've moved on from being a JW, but I haven't lost my values"?
We know the JWs are very judgemental. Overly so. So please consider what you wear will say to the JWs looking on. We want them to listen to the message, and not be swayed by the appearance of the protesters.
Disclaimer: I am writing this from the perspective of the JW mindset. Personally, I don't care if people have tattoos or what they wear. I'd welcome people into my home based on them as a person. I wouldn't expect Valis (for an example) to cover up his tattoos or cut his hair if he came to visit me. I think he looks great, and cant imagine him any other way. But if my staunch-JW sister was to see him, she'd instantly judge him by his appearance, unfortunately. That is how the JW mindset works, and it vitually impossible to change.