I emailed them asking about their stock in Giant part time and city, and got the following reply today. Hope this helps.
-----
In the Giant part-time ($1645): black, truffle, cafe, aquamarine,
anthracite, sandstone, seagreen, and vermillion red.
In the Giant city ($1595): black, white, sandstone, truffle, cafe,
aquamarine, anthracite, seagreen, marine, french blue, vermillion red,
grass green
When did you email them? I emailed them a week ago and didnt get a reply