i only keep my eye on Monogram/MC, Damier and Limited Edition before. I want to start to get some Vernis and Epi purses, there are so many different colors on the 2nd hand market. I have no idea which color is the latest or the discontinued. Could anyone help for this? does the color change every season or every year? Is there a special color is never discontinue? Please list the color which is currently in store and the discontinued one. Thank you very much!