Don't think I would be so bold to do green, but I LOVE the idea of two different cabinet colors on the top and bottom!!
Dark color schemes shrink an already small space and make it less inviting. Use soft shades on kitchen cabinets and natural light to visually expand a small room. BUT... if you want a warm cozy kitchen and yours is small, then go for the warm wood tones - sometimes getting what you love means breaking the rules!
Paint one wall with stripes! Frame coordinated pictures from a magazine or old book in monochromatic frames.