Taking videos at concerts - colored light on light skinned faces

When I'm trying to record a concert, the faces on the artists are hard to see, I'm not sure if it's because of their skin color or what, but the problem arises when colored lights from the ceiling shine onto them. Otherwise, the video quality in areas where the light does not shine is fine, and the audio quality is fine.

Is there a way I can fix this, or maybe use a different camera app?

Screen Off While Taking Phone Call

So I received my 5x this afternoon and enabled Wi-Fi Calling. I took a few call with it on and off. The screen turned off if in low light setting before I put it to my face and even in a bright area, the screen would not turn on when I took the phone away from my face.

Anyone else run into this so far?

Contacts storage taking up all internal memory

Hi
my phone has become unusable as my Contacts Storage app data keeps filling up internal memory. As soon as I try and uninstall an app to free some memory the CS app fills it up. I have checked with Diskusage app and it's now at 3.5GB+. Tried to backup contacts to perform reset but Contacts app as well as many other apps do not open due to lack of available memory as it is all filled up by Contacts Storage. I would not like to clear data from the Contacts Storage app and lose all contacts... but what to do? Is there any viable alternative?
Thanks
Marco