I made several copies of the pattern and using color pencils I tried a few color choices. The first is one of my favorites, black and red. The next two versions I penciled in green for the background. I'm not sure that it comes through in the scan. It looks good in person and I have several pieces of green silk, so that looks to be my choice. I like the additional color choices of black and gold for the leaves. I don't like the way the leaves are the same top and bottom of the piece. So I adjusted the twist of the vines in the center and got alternating color patterns.
Personally, I like the way the bottom one turned out. I also spend a little time looking over various stitches and think that I'll use multiple rows of chain stitch to fill in the leaves. I'll be couching gold braid outside of the leaves and the center of the leaves. I could play with some shading in the leaves, but I want to leave the attention on the lion, so I am going to keep it simple.
I have also been practicing the bullion or coil stitch. I have scans of my efforts and I'll post those tomorrow. Now I need to go over the pattern and plan stitch direction and how I'm going to transfer the pattern to the fabric. Using the dark green silk as a ground presents two problems. One is that the fabric is very thin and putting a light color design on dark fabric is ... interesting. More on that later.