When someone uses the insult "blue haired liberals" are they talking about old people or young people who dye their hair blue?

I thought the phrase "blue haired" had always referred to older people who used too much blue tint when they dyed their grey hair white but I've seen the insult recently when referring to "woke liberals" and am confused. If it's the latter, is dying one's hair wacky colors still considered "alternative" ? I thought it was a pretty neutral fashion choice at this point but fully admit I could be wrong.

Edit: Apparently, from the number of down votes this question has received, there are, in fact, stupid questions.