For Washington state it is only 7 characters on the plate, some have 8.
Color - who knows! My money is on blue since she is a blue freak. It just cannot be the lighter blue that is close to Carolina Blue.

That would not be allowed in the garage. NC State University grad and I am sworn for life to hate all things UNC blue.
She did mention Brown with Tan interior..... I don't think will happen.
I had a thought that yellow/black would look very nice! Could call it the Queen Bee. License plate QUEENB Although, she may not like that too much cause the B may get translated into ......

Not worth the pain that I would suffer..... Maybe call it BUZZ
I should take odds on the colors
One thing is for sure, it will change many times before the order is placed. I know I did 5 years ago.