I actually used two opposites in these cards - the colours reversed but also one has the embossing raised and the other has the embossing indented.
I would like to enter my card into these challenges:
Beccy's Place - Month of Holiday Cards (Day 15)
Penny's Paper Crafty - Anything Goes
I have used matching embossing cardstock on the two cards - the green one is indented and the red one is raised. The image used on both cards is from Beccy's Place and coloured with copic markers R000, G000, G14, G17, R46, R59 reversing the colours on each card. I also used some red and green cardstock for the matting of the images.