How to create a Dragon?

[AhkMed]

So I was trying to figure out how to make a red dragon NPC. Seems like the options are limited to Young Adult Blue, and a couple others, none of which are right. I tried to change the type and subtype, but that just adds them, it will not let you remove the original stats and abilities (breath weapon, names of the claw and bite attack, etc.). I tried to create one, which starts easy enough, but you have to add in everything (special abilities and attacks etc.)

Am I missing something somewhere? Can you just pick the creature type (dragon) and modify it to whatever color you want? Those options are laid out in Alien Archive for design. I am not wanting to take the time to create a whole new monster, just an age old one.