I thought I had this all figured out - but confused on the relationship between the fields I create on the Product Type (shirts) with fields (size & color) and then having selectable options for the user to see and modify in the Product Display.

Had my first field working (size). Looked great on the Product Display. Added a new field (color) on the Product Type (shirt) and went through all 12 to 16 products to add the different color options.

Went back to the node that I've created via the Product Display Content Type, edited it and added the additional products that had the additional color options. Hit save - and I don't see an option for the user to select the variation of color???

What am I missing???