To me, it looks like a lace doily design. I haven't done this, bue here are my thoughts:
Step 1 - Buy doily. Try a dollar store. Here is one, but you may need more than one (see step 2 second idea):
(without the blue flowers which are probably just glued on).
On a quick web search, that is the closest I could find to the one in the picture you posted.
Step 2 (first idea) - Use a rubber stamp, or paint on a paint roller, or colored marker (but something that doesn't dry too fast) and paint the back of the doily (flat side). Immediately put it paint side down on a piece of wafer paper. Protect your surface if the doily won't all fit on the paper).Cut around the doily imprint and apply pieces of that to the cake. Pipe details. The fondant should be the same color as the wafer paper (or you could cut out all the holes with an X-acto knife before you apply it to the cake).
Step 2 (second idea) - If you can get a few doilies the same, cut them into the shapes you need. "Paint" the back of the doily with food coloring, and use that as a stamp to apply to the fondant. Pipe over that.
Step 3 - admire your work.
You could use paper doilies if you think they would stand up to the coloring.