The paint won't work on the stove and ovens, as they would need a high heat paint. The dishwasher panel could probably be painted and look ok. Not great, but ok. The fridge would have too much texture for the stainless paint. They have appliance epoxy paint, that is usually white or almond. It works fairly well on fridges, and would work on the dishwasher. It is not designed for use on hot appliances, though. If you are determined to paint, avoid the stainless paint and at least use appliance epoxy. You may not think that you much to lose, but crappy paint can make the whole situation *much* worse.
Have you checked craigslist? You can find some good deals on appliances from people upgrading from white to stainless. Habitat Restore or used appliance stores also can have good deals.
The best upgrades I have seen, where existing appliances or plumbing fixtures had to stay, are the upgrades that work with the fixtures, instead of pretending the fixtures are different. If you can't beat em, join em. Painting cabinets or walls the color of the offensive fixture, helps the fixture not stand out. Choosing coordinating fabric for curtains helps pull it together. Find some kitschy 70's Pyrex or dishes to accessorize. Embrace the avocado, because it will eventually be back in style ;)