This mod should come with a warning that if you make your blueprint books with it, then put them in player storage... then play on some map without this mod all your colored blueprint books are deleted from player storage. I was hoping they'd revert to plain or at least be there when I enabled the mod again but they weren't.

It is an incredibly neat mod and I completely understand if this problem is out of your hands and a limitation of the Factorio API, I just want others to be aware before they lose lots of work.