That is up to you. It is unique,
Change my username

It's not a bad name, it's a skin type, Very Common among redhair, like Esau son of Isaac, from the old Testament.

I'm pretty sure that since you used the suggested username thingy you should be good xD. I agree with Augstokarlo.
Hello. I have chosen the suggested NewFreckle username for myself since I logged on to the Internet. Because my language is Persian and I do not know English completely, I did not know that Freckle has a bad meaning. Do you think I should change it or not?