Latest Google Chrome (32.0.1700.77) / Safari (7.0.1 (9537.73.11)) plus Sass v3.3.0.rc.2 / compass v1.0.0.alpha.17 won't show the harsh gradients if $angle: random
Using Sass v3.2.14 / compass v0.12.2 works fine (both Chrome and Safari), Firefox (26.0) is not affected at all.
Can be tested here: http://sassmeister.com/gist/8616595 (just switch Sass compiler version via Control panel)
related Gist: https://gist.github.com/nilswindisch/8616595