I'm working on a model where I have three sources (one for trays and the other two for regular lane and fast lane) and these are connected to two combiners. The combiners pack two items per tray. What I want to do is to combine two items with the same color in one tray. I have found a similar question, however in that case the pallets are colored too (Similar Question) and in my case the trays are all equal. Can anyone help me solve this problem?