ToZorMan's post in Recolored Boxes was marked as the answer
I create the obb and opb recolor. The name isn't Old_"Color"_Box but "Color"_Old_Blue/Purple_Box to differenciate the item.
Name : Old_Purple_Box
Categorie : Ragnarok Online
File Size: 104 KB
Author: Gravity
Download : Item - Old_Purple_Box [ToZorMan].zip
Link : www.green-peach.net
-----------------------------------------------------------------
Name : Old_Blue_Box
Categorie : Ragnarok Online
File Size: 123 KB
Author: Gravity
Download : Item - Old_Blue_Box [ToZorMan].zip
Link : www.green-peach.net