i'm not copying the settings.. in fact i tried and keep trying every time when i get time. Finally kind of settled(compromised myself) with so called natural mode(and intelligent mode turned off). But still definitely there is an issue with QLED. The color tone keeps on varying scene by scene and different camera angle. In one scene, face will look like full of magenta tone and next scene or different camera angle will change to full yellowish. I did try movie mode first based on rtings review on previous year model, but that looks washed out. These differences are not noticeable much in all the 4K demos we find in youtubes. But its definitely wont give satisfactory results with normal SD/HD contents. My little experience with photoshop kind of tools hints me that, something wrong with hue & saturation calibration of this TV. Its like bright image will show too much of brightness (losing out the details) and less bright/less light image will show more grayish. Another main issue is poor viewing angle!Do not copy colour settings and simply keep tweaking till you find something that you like.
And if you succeed in getting a refund for this TV then I would recommend increasing you budget and getting LG OLED C8/C9 instead. I have the C9 myself and it is fantastic with great colours out of the box and packed with features which will serve you well for at least the next 4-5 years.
The reason why i asked picture settings from other owners are, i see so many +ve and exceptional feedback in flipkart, so had a doubt whether my tv had some issues. May be some people liking this tV's color reproduction capability.