I think they work in some some better than others. I've only played 1 game that had them that I thought was too bright. The only thing I really don't like aboot them, is when it's used to in GI making diff'rent colored areas of the PF. Of course whatever people want to do to their machines isn't my business.
Also, in my experience the flashers are a complete rip off. I think a white/colored 906/89 do a much better job (eXpecially 906s).