If there's one note that deserves splitting because of colour changes it P#222a, which has a totally different colour that the rest of the type. This is even visible on my very worn note!
I completely agree. The current page doesn't even mention the colour change.
I saw no reason in adding a note of the colour change since the colour changed with the prefix. If there was a prefix B with red star, of course a comment would've been needed.
I've been thinking about to split prefix A from the others, but have decided not to, since members probably would've been confused about a split of the same pick.
I'll add a comment in the year line in the meantime.
If the colour of a note changes, why not put it in a separate page? It's what we'd do anywhere else, regardless of any mistakes made by Pick. It isn't just the colour of the star. The whole colour scheme is different, as you can see here.
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.