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I have not added any profile photo . Originaly the color was something else and now it has turned pink . I didnt change it and I dont know whether one can change it . I was under the impression that its system generated and will remain so till I change it .

Why did the colour of my profile picture change all of a sudden ?

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    $\begingroup$ I don't know, but I have a feeling you should post this to meta.SE. $\endgroup$
    – M.A.R.
    Mar 20 '15 at 14:37
  • $\begingroup$ @MARamezani What colour do you see right now ? $\endgroup$
    – pikachu
    Mar 21 '15 at 18:28
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    $\begingroup$ I can elaborate more later, but this is most likely due to a change in your email address in the system. When you don't specify an avatar, the system hashes your email to generate the image. $\endgroup$
    – jonsca
    Mar 21 '15 at 20:09
  • $\begingroup$ @jonsca I think that might be the reason $\endgroup$
    – pikachu
    Mar 26 '15 at 19:06
  • $\begingroup$ @MARamezani Okay. Thanks. $\endgroup$
    – pikachu
    Mar 26 '15 at 19:06
  • $\begingroup$ @jonsca How does hashing the email address give an image? Google told me that hashing converts it into a hexadecimal string. Then how does the string become an image? $\endgroup$
    – pikachu
    Apr 19 '15 at 6:51
  • $\begingroup$ @pikachu This is a good explanation of it: meta.stackexchange.com/questions/17443/… $\endgroup$
    – jonsca
    Apr 19 '15 at 6:56

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