concerning the door panels, I've removed all 4 of mine, and replaced the old tan leather skins, with new black leather skins. The process is relatively easy and requires few tools to do it. Here are the steps I use to remove my skins.
-after removing the door skins which I persume you've done, (If not its just a matter of finding the screws that hold it in (4) and pulling the skin off the clips) remove the two screws on the back of the door handle. Once you've done this you can get better access to the upper skin.
There are three sets of two metal tabs that hold the skin in. Bend these back into the upright position. once you've done this you can pull the skin off the door panel. It may take a bit of time, because the door handle does prohibit open access to the skin, but using common sence and patience it will come out in no time. Here are some pics of how mine turned out
as you can see the old tan leathers were replaced with black ones, and I ended up going all out on my car and replacing the arm rest, and glove box with black leather as well.