The original mod description is as follows:

Adds color to items on map/minimap for contrast. Aids map readability.
Belts, splitters or underground belts are colored on the map based on their color (basic - yellow, fast - red, express - blue). Belts from bob's mod and 5dim are also colored. Also changes all power poles to white, and changes steam and solar buildings to green. Roboports, Radar, and Pipes are colored as of 1.3.5.
Additional and larger pictures: http://osldgoth.db48x.net/piwigo/index.php?/category/30&display=xsmall
Main post: https://forums.factorio.com/viewtopic.php?f=144&t=22953

See Changelog.