If you choose wood, you have the choice of solid wood or wood veneer. The latter is cheaper and is less influenced by weather conditions.
The humidity and temperature outside have an effect on your solid wooden kitchen doors, but the biggest influence comes from the changes in temperature and humidity in the kitchen.
Veneer can also give a more uniform look to the fronts (if this is what you want) as the pieces of wood used are cut from a larger piece in thin strips to cover all the doors.
Wood itself is available in all kinds of colors, but it can also be glossed, painted, colour washed or waxed to give it the finish you prefer. Look at the pictures on this site and on the Internet for more ideas and examples.
Cabinet Woods
Pine:
Has a casual, rustic look, some graining, color variation and knotholes. It is the softest of cabinet woods, so hinges may need to be tightened periodically as they tend to pull out of the wood after use.
Oak: (click here to continue reading ››)
Has a casual look, a lot of graining and an even color tone when stained. It is a very hard wood and looks great [...]

