What's the best tulip in the red/pink/purple color range? Bi-color is okay.
Is it good for indoor forcing as well?
My very favorite deep purple-black is Queen of the Nile.
No idea about indoor-growing.
Pink Impression is my favorite. Very perennial (mine have been coming back for 5-6 years!), fist-sized flowers, tall and regal. There is a Red Impression as well but I haven't tried it.
I'm sure it would force well but it might be kinda big indoors.