A childhood belief about history

I was looking at old black and white pictures of when my mom was little. Then once she was in middle school the pictures were all in color. I asked her when color was invented, she said somewere in the 1950's. Later I asked whose Idea it was to make trees green, and the sky blue and things like that, and she just said that God did that when the Earth was formed. I reminded her that she said color wasnt invented until 1950 and she laughed and explained to me that everything was colorful, but color film wasnt invented until the 1950's.