She has greyish blue eyes. Google photos of her with eyeglasses.
Eyeglasses probably for reading over contacts for distance.
Her college pix in the 60s show blue eyes. But I knew people in the 60s with colored contacts. This has been delved into before. Enjoy
http://www.freerepublic.com/focus/f-news/1983998/posts
Blue or brown at any given time depends on how full of sh!t she is.