After some research, I decided that Irish Chain would be possible in green and yellow, with a cream background. I started by making some ninepatches. I had played around with crayons and graph paper, hoping to make the yellow go one way, and the green go the other, but the fact that one colour had to be in the centres spoiled the flow. Also, the design had a very diagonal appearance, which I didn't like at all.
Back to the drawing board (or graph paper) and then I came up with this design. The colours are alternate in each row, one with a yellow centre and the next with a green. This looked much better, and the solid blocks inbetween the pieced blocks made it grow really fast!
In no time at all I had completed enough blocks for the main part of the top. I managed to find enough pastels in my stash to keep the gentle tone.
Now I have to decide how to complete it. A small cream border to make the chain float, then yellow and bind with green? What better ideas do you have?