To setup your own domain name and theme colors follow the below steps:
Login to your domain register and create an CNAME record for your domain point to
You can test that your domain is setup correctly using
dig @18.104.22.168 +short CNAME my.example.com
On successfull pointing, you can able to see the results similar to below
;; ANSWER SECTION: my.example.com. 984 IN CNAME cname.mobtexting.com. cname.mobtexting.com. 59 IN A 22.214.171.124 cname.mobtexting.com. 59 IN A 126.96.36.199
Note: Some hosting providers may take upto 12 hours to resolved the cname mapping.