Show tooltips for swatches
Step 1: Enable tooltips
By default tooltip for swatches is hidden, but you can enable it in settings. Navigate to Appearance > General and choose you desired tooltip behavior. You can show tooltip both under or above swatches.
Step 2: Set swatch names
Tooltips are using swatch names. If swatch name is empty - the tooltip won't be displayed. So make sure to set swatch names in your groups.