Can understand that they might be an acquired taste, or even one you never acquire, but this band has been on the go since 1991, with a large number of line-up changes over the years, but they do really make the festivals in Scotland and elsewhere rock: they have a huge fan-base and have won plenty of awards for their music and live presentation, and commonly being final headline act on the last night of any festival with everyone bopping around in the mosh pit. Oh and if you look at their videos on YouTube, blue lights do seem to be popular!
http://www.peatbogfaeries.com/