A very nice kit
. I remember doing mine - but I used the red decals instead of the blue. My suggestion is - Don't use red, because it look pink when you're done
.
As for body colour, Silver is fine - thats what I used for mine, and it looks pretty nice. I do remember having fitment issues with the car though. Sometimes, you get a kit where the plastic is all screwed...
Have fun with it - Merc.