Differences between HF 5-Drawer Service Carts w/different part numbers

[PAToyota]

Depending on color, there are between one (blue) and three (black & red) part numbers for the 5-Drawer Service Carts (other colors have two numbers each).


With threads like this one on the differences between HF 56" Series 2 Boxes, has anyone looked into the differences between the 5-Drawer Service Carts?


I have three of the red ones from years ago. I'll have to look over them all to see if there are different numbers on them or visible differences.

 

[PAToyota]

By the way, here is the $169.99 coupon on the red, blue, and black versions:

And the $189.99 if you want the other colors: