Astrology Forever, white

Hiya!
Does anyone know if there’s a way to date these scarves, by color maybe, or was this design released in all colors at once? Something tells me that it wasn’t though. I have one that’s white that i would like to to put up for sale but this is now the 4th one that i’ve come across and i fell like i would love to learn more about it before i let it go. Also… are all Hermes scarves signed Hermes and by the designer or are there those that have only the “design” without any names?
Thank you :slight_smile: