Changing the looktype would make you appear as a dragon.
You'd have to look up what looktype a dragon has on ur server.
My dragon for example looks like this:
"<look type="34" head="0" body="0" legs="0" feet="0" corpse="4025" />"
So if you'd like to look like a dragon in ur server it would be:
"looktype="34" body="0" legs="0" head="0" feet="0"
Some looktypes doesn't have colour options.
atleast on my db/spr.
The classic dragon looktypes don't have colour options and thus you can't change them. However, if your server has them, the new dragon sprites from the RL First Dragon Quest do support colour options. Think the looktype is somewhere around 900+
it's easy to do with tibia.spr editor, tibia.dat editor and probably otb editor too
but it will take some time, maybe 1h+
also every player who want to play on your server will have to download your own edited client
take this png i made long time ago, all you need is to find someone who will finish tibia.spr and dat for u