Michael F. McCartney wrote:

Harking back to earlier in this thread—IMO blazoning a dogwood as "proper" would suggest, if the field is a "color" (red, blue, etc) that the flower would be white; & if the field were a metal (white or yellow) then the flower would be as dark a shade of pink as one could get away with, without losing the idea of it being a dogwood.  That is, where "nature" allows a range of colors all of which wopuld be "proper" the artist would opt for the coloring with the greatest contrast.

Of course if you want it to be pink notwithstanding the opinion above, simply specifying the color, or the particular variety of dogwood, is quite sufficient to overcome mu nootopn of the "default" coloration.

I think it’s not precisely correct to say "would".  This is definitely what he "should" do from a design standpoint, but it’s not a strong as saying there’s a "suggestion" here.