Here are the challenge colours.
Here’s my attempt.
My beige isn’t quite as beige as I’d hoped and my green’s a few shades out, but never mind. I stamped the grasses with Fabrico (now Versacraft) Mint Green ink, then clear embossed them. Added a sun/moon mask, then sponged over the whole card with Versamagic Wheat (adding a little Pumpkin to edges and bottom). Finally, I stamped the words in Versafine Vintage Sepia and embossed .