Brightens the color mask of cargo wagon. Best use with the Color Picker - Wagon mod or any mods that can change the color of cargo wagon.

With the gif, you can see the difference with and without this mod:
https://gfycat.com/FewPhysicalGosling

For Factorio 0.15: please use 0.2.0+
For Factorio 0.14: please use 0.1.0

For discussions, please visit our forum thread.