I color matched my bumper inserts, emblems and rear hatch handle. Here is my experience.
Removing the pieces isnt too bad. I did mine and it took me about 45 minutes to dissasemble and reassemble the surrounding areas.
Front has 13 clips and is as quite easy. Remove the top plastic cover and reach all the top clips. Then go underneath and remove the 2 10mm screws and reach your hand under the bumper cover to reach the side and bottom clips. Really simple in my honest opinion.
Rear was a lil bit of a MOFO but definately do-able (Just need patience). It was a tight space and i wasnt about to remove the rear bumper so i managed to get it done. The rear has 14 clips that are placed similarly to the front. Need good finger strength cuz your hand is inverted in some situations. The rear has 2 10mm screws and 2 pop rivets that provide a gap to squeeze your hand through. Then to get to the top ones you need to remove the side pieces connecting the mudflap to the bottom of the bumper (5 screws each side). Squeeze your hand under the bumper cover and work your way around to all the clips.
Good luck!
Mike..
Doesnt have any install pics but this is the end result.
http://www.toyota-4runner.org/5th-gen-t4rs/174847-build-thread-ebony.html