Nice catch! I have approved your request, although I suspect that both colors
may have been included at various times or in different editions. There are
large images of this book online where the parts do look the same color as the
slope and round 1 x 1 tile.
There are also two other versions of this book, one of which is the Egmont edition,
with differently-shaped parts trays which are not in the BrickLink catalog.
Then there is this book inventoried from sealed set contents with the flat silver
plates:
USA, Ohio
