The arrest warrant says nothing about printer dots, actually. It says that once they saw it was printed (per the Intercept showing them a copy to confirm its legitimacy) they simply looked at who'd printed the original document. Upon looking into the desk computers of those 6 people, she was the only person who'd had email contact with the Intercept.
They didn't even need the yellow dots. She literally emailed the Intercept from her work email and was one of a trivial number of people who'd printed it in the first place.
They didn't even need the yellow dots. She literally emailed the Intercept from her work email and was one of a trivial number of people who'd printed it in the first place.