I recently received my Nexus 6p after preordering it and have been putting it through it's paces. I did notice right out the box that the screen was quite saturated compared to my iPhone 6. This seems to be due to the AMOLED display, and oversaturation is just a byproduct of AMOLED displays. But there is a hidden option within the Developer Tools which allows you to set the phone to sRGB mode. I decided to give this a try and see what the results would look like. Turning this option on does tend to wash out the colors. I have included pictures below where you can find a comparison between the sRGB mode being on/off and compared to an iPhone 6.
