Knowing is the opposite of searching
Good infographics should help people to better understand contents which are harder to understand by reading e.g. a text alone. So they should offer their conclusions clearly and less complex. A lot of infographics play hide and seek with the readers instead. Here’s an example of such a graphic in the current issue of enorm Magazin which pretends to be an infographic but proves to be a picture puzzle in the end.
So instead of showing a huge variety of most colourful simple charts, the colours should support the hierarchy of informations and layout should work as a guide for readers. When everything jumps, moves and shines, nothing will stick out. The message from the graphic to the reader will be: „Sorry but don’t know what i want to say. Do you?“