I'm not particularly good with color challenges and it took a couple of tries to come up with a card that I liked.
I started with the darkest teal from Altenew and stamped the Wallpaper Art leaves. I found two papers from Core'dinations that went well together with each other and the ink color. In fact in the photo they like the same color but the leaves are really darker. The panels are cut from an MFT die with a little white between to brighten it up and tie into the white leaves.
The Design Team and our guest designer are waiting to inspire you. Check them out and then make a card using the challenge colors. You may end up being our Chic of the Week.