Replacing appliances for the sake of getting a different color or style certainly isn't green. And if an appliance is working, is it really green to toss it in a landfill? Those landfills are filling up and coming soon to a neighborhood near you! Hope you get my humor!
But I bet each and every one of us is conscious of wastefulness and excess even if you say you're not "green." It's just how everyone rolls these days. It's a good and responsible thing. Smart steps toward a better planet. It doesn't take anyone going to extremes. Common sense is always in fashion.