i don't know about the current ones being shipped, but mine did not have any "red" grease in them. they did have a sticky shipping lube that needed to be removed for smooth operation.
What i did with mine - before assembly - was to use a good penetrating spray (i like PB Blaster, myself) and spray them thoroughly, work the slide back and forth (being very careful not to let it slide off the end), wipe things down, spray some more, work it, wipe it, spray some more, etc, etc, until they were moving super easy and all traces of the sticky shipping lube were gone.
I did have one that wanted to kind of hang up every so often, but after working it over with the PB really well, even that one was moving pretty smoothly.