How funny it is that people think of brown as ugly. I know my hubby has a negative association with the color, because when he was a teen, his parents made him get a brown suit instead of the blue one that he wanted... To this day he steers clear of brown t-shirts, pants in general.
Your quilt is beautiful! I personally love natural tones of brown and greens.. and of course, pretty much all the blues too! :) Great Job!