Claire Foy is the subject of a new viral video, in which the actor refuses to sign an autograph for a specific reason.The short clip, which is currently making the rounds on social media, features The Crown star pausing to sign an autograph, but refusing after seeing the colour of the pen ink.Foy, who recently starred in the movie All Of Us Strangers, continued to walk past the fan saying: “I don’t do blue,” to which the fan replied, “What?”, prompting Foy to repeat herself.Viewers of the video have been sharing theories about the actor’s refusal on social media. According to LadBible, one user suggested: “Most celebrities and athletes are taught not to do blue ink cause you can scan and forge the signature on other things and sell them.”However, as per an interview with Today, banker and attorney Christopher M.