On my buying id in the few weeks before the rules were going to change so you could no longer get a pretty red dot I tried my hardest, I bought cheap items from sellers with terrible feedback, I purchased things that would be easily broken and feedback testified to the fact the seller didn't care etc etc etc and every single transaction went of without a hitch:_|

I have to agree that some sellers appear to hate monotone feedback and obviously actively encourage buyers to leave different colours rather than all green. Of course it is going to happen more now as it is the season for all things red and green.