It's not just old people. All people are helped by color clues. Before Jon Ive banned color, Mac and iPhone apps were full of colors. You could easily distingu

It's not just old people. All people are helped by color clues. Before Jon Ive banned color, Mac and iPhone apps were full of colors. You could easily distinguish toolbar buttons by little colorful icons. It made it really easy to use the app, since locating the button with the yellow icon was really easy. Then came the decolorisation, and suddenly all color was gone and all the distinctive icons were replaced with monochrome glyphs that all look exactly the same. The abstract design makes for a very clean design, but every time I open Mail I have to consciously look at the buttons to figure out which one is trash vs. archive vs. spam.