I discovered these colorized Jokers in a two-deck set at Walmart in Colorado Springs about a month ago. These sets (red/blue) were sold at the checkout lane display, are cellophane sealed 2-deck flats, and are the "Standard" decks made in Cincinnati (according to the box).
I went back and bought several more decks, but these latter decks had the normal black and white Jokers. Haven't seen them since, but this Genii thread is most illuminating.
As noted elsewhere here, the colorized Jokers are perfect for a color change!