It’s funny that they show the arms crossed in the link. :p
Usually what ends up happening is you have to Frankenstein parts from different mannequins and modify pieces to get them to get the right pose. They look really good regardless.
I see. Your best bet is to do what was already mentioned and try to get it to a lighter grey first by using the dye remover and then start dying it with the blue in small increments as to not get it too blue.
My philosophy has always been (which sometimes may be viewed as unpopular) is that this is your kit and you are free to paint it as you choose. I like to be accurate as well, but at the end of the day the only person you have to please is yourself. Not anyone else. For my jetpack I painted the...
Looks great. My only nitpick would be that the figure’s chest box is ANH and the chest box in the photo is from ESB/ROTJ, but that’s just my OCD kicking in.