How long does it take you to color correct and color grade a short 3 minute long video?

[tensor]

Hello - I am new to color correction and color grading. I am wondering typically how long does it take to color correct and color grade a 3 minutes long video?
Also, what is your favorite tool to color correct/color grade a video?

Finally, apart from applying LUTs are there any easy programs, which can quickly color grade the video for me. Example - just press a few buttons and boom I have a nice color corrected/graded video ready

Thank you.

 

[Mister20seven]

I use Magix Video Deluxe 2018.
I already had some issues with it and their support really sucks, but the software has a nice auto-color feature, which I use most of the time. I only had a few shots while snorkeling, which I had to adjust manually. But even for the most of the underwater shots the feature worked out great.