In purpleme wrote:
Do they exist? I have looked online and everything I've found under
purple is really more a mauve. I want something that's a true shade
of purple... TIA

You have a few good choices out the

Big Purple (HT)
The Prince (Austin)
Purple Tiger (Floribunda, striped purple and white)
Mr Lincoln
Charles de Mills

Of the above, I would regard Purple Tiger, The Prince and Mr Lincoln as
having the 'truest' shades. The latter two start red and go purple as
they open, while Purple Tiger is that deep shade all the way through the
bloom life. You mightn't want a striped rose though.