PaulBThomas

Yes if your subdomain provider allows domain forwarding to specific urls, like to mysquarespacedomain.com/jackgreen.  It is not possible to directly connect a third party sub domain to your site  and direct it to a particular page. GoDaddy offers this service;

I've figured out that by setting the header style to dynamic, I can change the navigation color on each page by changing the navigation color in the site styles. I didn't realize the dynamic style allowed per page customization (I thought it was site wide) so I was trying to make it more difficult than it needed to be!
Thanks for trying to help -- your answers to others' questions have also been a huge help to me in the process of customizing my site with css as a complete beginner. 

I'm really super disappointed in Squarespace for not including share buttons. I'm a big fan of Squarespace, but seeing that the platform lacks such a basic need, make me doubtful. 

Wow! Come on Squarespace! I've been a big supporter, but it REALLY sucks to commit to the 7.1 platform and then find out that some of these basics are not supported. Please don't be such a growing disappointment.

This is a joke, any standard blog page should have a share buttons readily available. Come on Squarespace, make it available, or will this be another app that we have to pay for. Starts to feel a bit like I am dealing Ryanair.