They aren't the same paint formula.
Apparently, so many people requested that the *color* come back, that Testors didn't quite "get it"
So, yeah, you can buy Reefer White in an MM bottle,,,,,,,but, it is Reefer White MM Acrylic paint, not Polly Scale formula paint.
And Polly Scale always came in the little 1/2 oz bottles, in addition to the 1 oz bottles. You bought colors such as Olive Drab in the 1/2 oz, But Railroad colors in the 1 oz, with a very few Railroad colors in the 1/2 oz.
If you want Polly Scale that is not at your hobby shop, there are a few online sources for some of the colors, and Amazon and Ebay sellers for some of the colors.
I have listed the sources in about 4 threads on FSM, and have a FS 595A list here for anyone that wants to substitute Railroad paints to get US Military colors.
z15.invisionfree.com/.../index.php
every paint match was made by painting two coats on a label stuck on cardstock, then compared to an actual vintage FS 595A (1968) . I was going to photograph each match and post it online, but, caught sufficient flak that I decided to just let it sit in limbo-land.
But, if you get any use out of it, feel free to give it a look.
Rex