RE: Colortune
Al, somehow I ended up with two of the darn things, IIRC picked up from a
clearance items box at a FLAPS.  Used one a couple of times on my Spitfire
and at least once on the Chrysler.  I came to the conclusion it was an
elegant solution to a non-existent problem.  The used one disappeared over
the years, the other, still in the box, went at a yard sale about ten years
ago when I downsized to a condo.