You will need color wash spray. There are more and more brands out there all the time. I happen to have ready made Smooch, Adirondike Color Wash and Tim Holtz Perfect Pearls Mists along with an assortment that I have made myself.
You can make your own using a few drops of an ink refill in a mister bottle along with some Perfect Pearls Powder and water. 2 or 3 drops, 2 or 3 (tip of Popsicle stick) scoops of Perfect pearls and then fill with water and shake well. Easy Peasy.
Spray your Color Wash over the bag and
place your paper down on top. Press lightly around the back of the paper so you are sure to get the surface covered. You don't need to press too hard here. You can always add more. In fact that is part of the fun. You can experiment with different combos.
And when you turn it over... Magic!
Spray another color over the remains of the last...
And look what you get! Pretty cool hu?
I used Cordinations Pearl Finish Paper for these papers but you can also use Glossy Card Stock and regular card stock too. Try different colors and papers. Just wipe excess off the plastic bag with a paper towel and start again.
One other quick idea to share is when making the egg, I printed off a couple copies and some extra flowers and colored them with my Copics. I cut those out and ...
for one of the eggs I used my dry embossing tool and rounded the egg from the back side on a piece of foam.