On the 'marigold' (yellow) color of this card I used a very simple technique, "bleaching". It produces a cool effect & depending on what color card stock you stamp the bleach on, you'll get a different color of bleached image. On 'marigold morning', the image bleaches out to 'apricot appeal'.
I took a paper towel & cut it to fit a plate. I then poured bleach onto the towel, but not too much! Then all you have to do is "ink" your stamp with the bleach & stamp away!!!
I stamped a whole sheet of card stock & then cut it up to make atc's. I had some left over, so I popped it onto this matchbook cover card for my secret sister!