Most of me thinks this is a dye streak, but of course there's that voice in the back of my head saying it might be a line. What do you think? Dollar tree test, pictures taken at 5 minute mark.
https://i68.tinypic.com/vfuihw.jpg
https://i67.tinypic.com/awwd4o.jpg
https://i65.tinypic.com/2i1zqv.jpg
https://i68.tinypic.com/vfuihw.jpg
https://i67.tinypic.com/awwd4o.jpg
https://i65.tinypic.com/2i1zqv.jpg