I enjoy the challenges at ColourQ and this one is no exception. The colours appeal to me. But, quite honestly, even if they didn't I would enter this challenge simply because of its theme.
Having been in that chair, hearing the diagnosis, the first thing that came to mind as I considered what I would do for this card was "keep calm". Well, I have that stamp set and, even though it's retired, decided that it would be perfect for my sentiment.
I used Naturals White as my base and then added a layer of Basic Black and a layer of the retired Pretty in Pink Designer stack pattern. For my small rectangle I began with a base of Basic Black and then attached a layer of Whisper White onto which I had stamped my sentiment over a background of stamped script from the retired Strength & Hope stamp set. I attached the small rectangle with Dimensionals and added three narrow banners: the top one and bottom one in Basic Black and the middle one in Silver Foil. I drew white "stitches" on the black banners and around three sides of the small rectangle. The Silver Foil was embossed with my Decorative Dots embossing folder.
I added the butterfly from the Strength & Hope stamp set which I first heat embossed using Silver embossing powder and then fussy cut (including the antennae). Finally, I added several Rhinestones and my card was done.
For more cards using these colours, check out colourQ.