I would have to say a soft shade of green. My favourite shirt colour to wear would be a soft brown colour, though. I also fancy pink, but that's more for material stuff and not clothing. Wall colour? Blue or peanut butter.
I don't have a definite answer. Maybe blue or green or orange, depending on where the color is and how I feel. Blue is clean and beautiful, green is nice and makes me feel calm, orange is happy and nice in a different way.
I think my favorite is a nice dark blue or subdued granny-smith-apple green. I'm really more of a fan of complimentary colors anyway. Under rare circumstances, I enjoy a smooth white. It's clean and refreshing.
I like the color blue, but my favorite has to be red. Tied with silver.
I can't really explain why I like red or silver, but I like blue because it's relaxing. Somehow. I tend to like neutrals after that. Because they're also relaxing. And brown Sienna. Because sienna is awesome. Nuff said.
Blue. Specifically royal blue, although most variants will end up making me happy. It's probably all down to the fact that I was on the 'Blue' team for school sports days in primary school and developed some sort of misplaced pride in the colour, but it's stuck with me, dammit! :D