They are 18" wheels, correct? If so, you want these wheel skins (they make them in both chrome and black for that wheel):These are my stock 2009 SE rims (before the corrosion) - see attached
You can probably get them cheaper on Ebay though - just search ebay for "IMP-355 wheel skin".
EDIT: If you want chrome, here is a brand new set for $65 shipped - this add also includes before and after pictures too:
EDIT2: One thing that I'm not sure about are the wheel weights. Most alloy wheel have wheel weights on the inside of the wheel, so that they aren't visible. With wheel weights on the outside rim like they are on your, they may "interfere" with the wheel skins. Absolutely worst case, you may need to get the wheels rebalanced using the newer-style stick-on wheel weights.
EDIT3: Just to clarify - while it doesn't really take any tools to install - there are some exceptions. Some wheel skins require that you remove your existing center-cap and then re-install it "through" the wheel skin after it's installed. Other skins don't use the center-cap at all and don't require you to remove the center-cap. So f the wheel skin for your particular wheel requires you to reinstall your center-cap "through" the wheel skin after it's been installed, then you will need to remove the center-cap before installing the wheel skin. Unless you have a way to remove the center-cap without removing the wheel (to push the center-cap out from the back), then you may need to remove the wheel for installation - just to get the center-cap out before installing the wheel skins. Just wanted to make that clear. Whether or not the skin requires you to install the center-cap "through" the skin after it's installed just depends on the exact wheel type and/or brand of the wheel skin. You *do* want to be careful if you try to remove the center-cap without removing the wheels - they are only made of plastic and ti's easy to damage them if you try to "pry" them out. They do make special tools to make center-cap removal easier, but personally, I would just remove the wheels in order to remove the center-cap - unless you need to remove them often for some reason.