pointmod hats and colors

i wanted to know if someone would be able to make hats,colors, and possibly trails for pointmod. for example, this is what im asking for;
you can buy a “melon head” (melon model parented to players head)for 100 points, and make it so that every time that player joins the server, they still have the hat they bought. buying new hats/colors/trails will delete the old ones, so you dont have to make an inventory.

point mod;
http://www.facepunch.com/showthread.php?t=933261

any help is appreciated!