UU Card Sleeves
There has been some disappointment that the colors of the sleeves weren't exactly as expected, so here are scans of the exact colors. (Note the hex color text is not part of the actual sleeve but only for reference)
The sleeves were available during the campaign for Control & Chaos and though they are available for purchase on TeeTurtle.com, they were not KS Exclusive.
Also note the sleeves are not opaque, here is a sample of what they look like with cards in them