fluorescent

“The dye is pink but it’s also fluorescent, so that’s kind of our main tracker.”

As he spoke, a group of volunteers in fluorescent vests arrived to help with the clean-up.

The message was simple and presented in the group's signature fluorescent orange.

In an old gun barrel factory in Sheffield's industrial heartland, hundreds of people are raving under the fluorescent lights of Hope Works club for one of the last times before it closes.

The pilot can also be seen kicking the shotgun away from the teen, who is wearing a fluorescent jacket.