Tooltip for image in filter

Hi,

Great plugin to start with. Found nothing else that lets me use images in Wooc filters.

Question:
Is it possible to add a Tooltip to the image? e.g. ‘Reds’ or ‘Blues’ over a certain image.
I’ve tried adding the title with the image, but that has no effect.

Help much appreciated. I’m no pro, but no newby either. ??

The page I need help with: [log in to see the link]