It is recommended to use Unity’s Post-Processing Stack in order to get the best colors and lighting. Without it, the colors in your game will most likely look washed out and do not use the full color range.
A Post-Processing Profile is included to use with Unity’s Post-Processing Stack. You can find it in the folder ‘Assets/Open World Nature/Common/PostProcessing Profiles‘
For a step-by-step guide on how to import and set up Post-Processing see the post-processing section.
Left: No Post Processing. Right: Unity's Post Processing Stack.