Cow on Swiss Alps

This is for A Day Not Wasted, August 2012 challenge. It's oil on 10x14 canvas panel.

When I saw the challenge (ref), I really liked the cow against the Swiss Alps, the orange yellow color cow against the beautiful blue background. I first painted an orange color under-painting, traces of which I purposely left shown at the end. For the cow, I used mostly orange family colors, such as cadmium orange, burnt sienna, mars yellow, Indian yellow etc.