Onions, continued

My multi-talented and warm and thoughtful friend Lin sent this haiku:

Beneath onion layers -
a lovely light shining through.
The beauty of you.

And my equally wonderful friend Nancy suggested ways for me to expand the onion metaphor -- is each layer the same color and consistency as the one before it? Do I react to each absence in the same way? And what if the metaphor is wrong, and there is something at the center, after all?