Finally I figured out what my last addition would be to Bonnie's block. After crocheting some purple threads around the heart motif to dress it up, the lime green beads go along with other parts of the block and help pull it all together.
Here is the whole block, isn't it a beauty, you can check out the details of it by clicking on the picture to make it bigger. I will be sending the block home later this week. Enjoy.