Question

Roses are red, violets are blue (apparently). But which color in the jumble was not used on the Tudor rose?

Answer 1

A combination of the royal colors was missing.

Answer 2

Blue was not used on the Tudor rose. It was red and white, combining the royal colours of the York and Lancaster families. Henry VII took those colours to signify that he brought an end to the notoriously bloody "Wars of the Roses", that is the war of those two royal houses. The Yorks' colour was white, and the Lancasters' colour was red.