I think you are mistaking the orange color for brown. The orange do really look like brown on normal capes. Anyways, mix red dye with yellow dye for orange dye. When you use the orange dye on a normal cape, you will get your " brown" cape.
You use one dye on the other.
Cyan/teal.
changing the color of your house is not a option. its a drag i know.
It is upstairs the tower in the goblin villlage, in a crate
Changing the color of an abyssal whip is a reward from the members only mini game Barbarian Assault.
You get an ugly muddy brown color
a mix of brown
to mix dark brown, mix black, blue, yellow and red
reddish-brown
golden brown
An ugly muddy color.
Brown.
you get the color brown
If you mix the colors red and green you'll get the color brown.
Random
Brown
black