This month at VIP, we wore our junky clothes and tried stamping with Clorox! We lined stamp cases with six sheets of paper towel and then poured in bleach until saturated to serve as our "stamp pad."
The background stamps worked best, or anything with thicker lines. Stamping sentiments didn't work well, since the bleach can run. I also found that using a paint brush to dip in the bleach is a good way to touch up your images.
As for what colors of cardstock work the best, I suggest dark colors like Blackberry Bliss and Basic Gray. But surprisingly not Basic Black which doesn't work at all! I also like bright colors like Melon Mambo and someone got a great (but subtle image) with Pineapple Punch.
The second card used the retired Swallowtail background stamp on Melon Mambo cardstock.
And the last card used the Buffalo Check stamp set on Blackberry Bliss. Then we used the free Lovely Lattice stamp also on Blackberry Bliss, then snipped out and popped up with dimensionals.
Such a fun and interesting look, if you can handle the bleach smell!