Hi Rawad,
Please don’t be so quick to judge Ex1r based on one experience. I have 6 of them and have used all of them in different situations with great success. I would be very careful using the auto white balance. It is very sensitive and changes quite quickly. I assume it would go nuts in a colored light situation. Get a correct white and go with it. Colors should change in that situation. Also, I use auto iris quite frequently and have no problems with it. Use the Zebra feature. The monitor is quite accurate. Also, if you are adjusting your viewfinder to crappy footage you are perpetuating your problem.
Good luck and play with your camera some more.