Harmy said:

Sure, like I said, the colour are not final.

In MPC, just press ALT+i to get a screencap at the actual resolution of the video. You can save it as either JPG, BMP or PNG and choose the folder :-)

I know but in the past I've had issues with the colours changing slightly and even the ratio changing when I use the save image function in mpc, so now I always use the PrtSc button now to get exactly what I see when playing the video.

As for the colour grading, from my personal experience with these three films, i've found that its very easy to get carried away and take away too much blue (I hate the blue tint introduced in the 2004 lowry masters as well). This tends to lead to yellow overwhelming the other colours if you're not careful. Having pretty much finished regrading all six films to my satisfaction now, my experience has been that Star Wars is by far the most difficult to regrade because the 2004 dvd/hdtv/blu-ray colour grading is very erratic. I was not able to use a single regrading filter for the whole film, many scenes, especially the blockade scene at the beginning, required different grading on a shot by shot basis to make it consistent colourwise.