Real Examples of Foil Colors on White Cardstock
Rainbow Holo Lilac
Rainbow Holo Pink
Rainbow Holo Seafoam
Rainbow Holo Silver
Silver (NOTE: Silver currently in stock is more similar to Titanium and not as bright as pictured above)
Some Examples of Foil Colors on Black Cardstock:
In order to have a portrait properly show up on black cardstock, the image must be reversed. A lot of detail gets lost, especially for those images with low contrast. Given the nature of some images (i.e. no defined edges), reversing the image is not possible.
To preserve the most detail, white cardstock is best.