Now you can add post-production effects to your Unity Free projects! Fine tune the colors in your scenes or alter them drastically to create a variety of effects with Color Balance. Highlight particular areas of your scene with the Bloom effect, add in Star Bloom for a glare effect or use it as a faster bloom. Blur your scenes or even add in Motion Blur. Moreover you can create your own custom effects for use with IndieFX. Additionally a Black and White effect is included, but you must complete the custom effect tutorial in order to make it available for use.
Due to the nature of adding post production effects in Unity Free this package can eat up a good deal of performance, I would recommend IndieFX for lower resolution projects. IndieFX was inspired by a similar package featured on this thread.