You’ll only get one order number so I usually add -A -B -C to the name like this:
D34535_5x5_Green_0.8mm_10pcs-A.zip
D34535_5x5_Green_0.8mm_10pcs-B.zip
D34535_5x5_Blue_0.8mm_50pcs-C.zip
D34535_5x5_Green_1.6mm_10pcs-D.zip
D34535_5x5_Green_0.8mm_50pcs-E.zip
No complaints from Seeed so far…
Previously I did like this:
D21311-A.zip
D21311-B.zip
But I like the first version better since it gives more info and is very clear about number of pieces and colors.