Don't you love the POP! that white embossing powder gives on a dark card stock?
And the contrast of bright colors on a dark background?
I had already decided I wanted to include white embossing on a dark card in my card Buffet Class last week but was struggling to find something else to use on the card when I saw Dena's card HERE had the black and white layers - but the pop of color was just what I was looking for.

HINT: Use your embossing buddy - a LOT, on dark card stock.
​It's okay to get lots of powder on the card - yes it leaves the dark card looking cloudy but once you've embossed with your heat tool you can go back with a VERY slightly damp cloth and give the card a wipe - this will return the dark card to it's original rich dark color ;)