I love my silver, and the 15 shades of grey of the interior is fine, it's just getting old. I've had the car almost 2.5 years, and I think it's time to introduce some color. With that in mind, and the fact that the door arm rests are rock hard. I'm going to jump in and replace the door cloth with 1/8" and 1/4" landau foam and new material. The forum is described as 'Looking to "pimp" your 2010 Prius' - I'm thinking this says pimp.
I'll watch your progress closely. The door arm rests are way too low for me. Maybe I need to lower my drivers seat, but I like the higher seating position. But my arm does not reach the arm rest, it's worthless for me (and I'm an average 6' tall person). I was thinking about putting a 3 inch thick foam pad on the arm rest so I could use it while I drive. Now on long trips, I just rest my left elbow on top of the door which is not very comfortable. Oh, I think the cloth you chose looks fine.