stevies sunglasses

[stacey]

I was wondering if anyone knows that name of the sunglasses that Stevie wore in the 70s/80s they were dark brown at the top then Progress into a light almost translucent brown and i think purple was the other color you could get

i have 2 pictures of them but its not quite the color but it will give you a idea of what i am talking about ones black and white so if anyone has a colored pic of it that would be brilliant or if anyone has any pics of stevie wearing similar sunglasses i would love that 2
i am looking for a pair but i have no idea who to find them!!

Take Care