Question About Valiant Emblems

I've noticed on some Valiant grille and trunk emblems, as well as some emblems on wheel covers and such that sometimes the "V" Valiant emblem is half blue and half red and sometimes it's half white and half red. Vixen's grille emblem for example is half white and half red. The white is not faded blue, it's white and original I believe. Mine is a 64 Valiant. So what gives? Why the two different colors?