Dream Halls + Eldrazi

[rockout]

I'm pretty sure I know the answer to this I am just looking for confirmation.

Can I pitch a card to cast an eldrazi if the eldrazi are "colorless" using dream halls? If so, any color?

Dream Halls
emrakul, the aeons torn

Also, I forgot how to do card tags.

[cdr]

It's [cards], with an s. Also, you can put any number of cards in between, one per line. It was really meant for decklists.

Cards with no color can't share a color with anything. Using Dream Halls is an alternate cost, so you can't even start to try to use it if you're doing something illegal.