They are found in Seville Yellow, Skokie Green, Crystal Satin and rarely in Crystal.The jade mug is difficult to get because not only is it scarce, it is also collected for the jade color which glows under a black light.
McKee Hard to Find 1930s Skokie Green / Jadite Bottoms Up Tumbler with Skokie Green Coaster. McKee Hard to Find Bottoms up Skokie Green Tumbler and Coaster. The idea was to fill the tumbler and finish drinking it before setting it on the coaster.