88: Placement of mobile UI components

http://en.wikipedia.org/wiki/Rule_of_thirds

http://www.colorzilla.com/gradient-editor/

http://en.wikipedia.org/wiki/Golden_ratio#Aesthetics

http://en.wikipedia.org/wiki/Headroom_%28photographic_framing%29

http://en.wikipedia.org/wiki/Lead_room

http://en.wikipedia.org/wiki/Golden_spiral

http://en.wikipedia.org/wiki/Golden_angle