Hiya Sun!
There is a link in the OP as to how to buy a Wook shirt. From that link you can select color, type, and there's also an option to add a custom name on the back.
There are two Pink color options; you can check out all available color options here:
https://www.americanasportswear.com/ShopNow/Item.aspx?ID=33
Share a pic when you get yours! I will be fun to create an album of Wooks in their Wook shirts.