Dye your own thread color as you sew?? And, I was just talking to my husband about this, this past weekend... REVERSE ON THE PEDAL!!!! Woohoo!! I may be the only one that stitches a lot on reverse and wishes the reverse was on the pedal. heehee
This project is called “Leitfaden” and I want one.
it's a concept design and not in production (yet) that I know of.
See this: http://www.yankodesign.com/2010/04/20/sew-color-what/
and more here: http://www.monikajakubek.de/index.php?/naehmaschine7/