From version C6 for 1.12, Optifine has feature called "Custom GUIs". Now you can edit GUI texture considering biome, height, beacon levels, etc.
So, to try this feature, I created resourcepack that changes color of inventory in red shulker box. But my photoshop skills are not very good, so I leave resource pack for others. Maybe someone wants to finish it.
(I have not decided whether to paint all inventory, or just a top part) Link
From version C6 for 1.12, Optifine has feature called "Custom GUIs". Now you can edit GUI texture considering biome, height, beacon levels, etc.
So, to try this feature, I created resourcepack that changes color of inventory in red shulker box. But my photoshop skills are not very good, so I leave resource pack for others. Maybe someone wants to finish it.
(I have not decided whether to paint all inventory, or just a top part)
Link
c6?are you from the future?
Preview version
This is awesome,desides i neither dont have hability to do it complete