New Item Rank clarification

We all know the item ranking system in Maplestory, Purples are considered well scrolls, Yellow are considered Godly (often), and Grays are vendor trash.

With potential system added, I see at least two new rankings by coloration, red and green. Does anyone know or can clarify the additional rankings to the system? Also, I heard there is Pink label, but loljpg compression makes me unable to tell if any items are pink (since MS' built-in screenshot uses JPG)

Red/Green Example:

 Spoiler

Reference of Old: Gray < White/Orange < Blue < Purple < Yellow