Where can I buy solid color dresses? Simple ones?

I found cute dress at this site a href="http://www.amazon.com/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fb%3Fie%3DUTF8%26node%3D160812011%26no%3D10966451%26ref%255F%3Dsc%255Fca%255Fc%255F1%255F10966451%255F2%26me%3DA2HLK9C2IWJJB7&tag=computer0bd-20&linkCode=ur2&camp=1789&creative=390957" rel="nofollow"http://www.amazon.com/gp/redirect.html?i…/a