As a master Alchemist on PC I know a good bit about potion making. I know I can get a select few blues while crafting, but we have no current option in game to make our greens; blue. 

Before the very dumb change on PC you would simple alchemy 3 greens of the same potion to make a Blue grade potion. Currently on PC you need the 50,000 silver item to make them blue. 

Why have did the dev's left out both options of making Blue options? To insure PC players don't have an unfair advantage? Did they forget to add the original way of making blues? I figured the 50,000 silver Blue Reagent would be too expensive for current state of game considering this change came around year 2 on PC, and still to this date is widely hated by alchemist. 

 Do have an idea of what the dev team is trying to do with these right now? Are these planned for an update or is this bugged in game and vendors don't have the items or the process is broken and we can't combine greens?