I have never purchased from there, but I can say that different computer monitors will show colors differently.
I had some korkers posted a while back and the lady that purchased them messaged me and said she loved them but was not so pleased that they did not match the color in the picture. I held the exact ribbon up to my screen and it looked like a perfect match to me. She said on her screen it looked more like a neon color.
So no biggie, she just exchanged it and was happy (I did have a brighter color and she was nice about it).
I was at my moms house a few days later and went to see if it was the monitor difference, it looked neon on her screen as well.