adobe illustrator - Why are my strokes showing up black, with no colour selected?

All of my strokes are coming with a random black 1pt stroke that I can't edit or get rid of. I can change the colour of the 'outer' stroke, which is technically the same line. That shouldn't be possible. I'm not new to Illustrator but just recently purchased CC, is this usual in CC? Quite frustrating. Please help. Here's some pictures.