A gold bar, 200 crafting experience and 5 quest points.
3 Goblin mails (Kill the goblins behind lumbridge castle), 100 gold, 3 red berries (Spawn point South East of Varrock), 2 onions (Obtain from behind Fred the farmers house between Lumbridge and Draynor Village or from an onion patch North of Rimmington and slightly East of Melzar's Maze), 2 woad leaves (Obtainable from Wyson the farmer in the Garden North of East Falador bank).
Before you even talk to the person you need to about this quest, I suggest you get the items required, this will save you a bit of travel time.
Kill goblins behind Lumbridge castle until you get 3 goblin mails.
Now you can go to the food store in Port Sarim and buy 3 red berries, if you are cheap and want to go get them for free, go to the South of Varrok and East of the stone circle, there you will find 3 red barry spawn points.
Now go the the oinion patch displayed in the picture and get 2 onions, better take 3 or 4 incase you accidentally eat them lol.
Now go into Falador and go into the garden North of the East bank, speak to Wyson. Offer him 20 gold for one of them and he will reward you with 2, see it pays to be nice sometimes :)
Now you've got all the ingredients you need to make the dyes. Go to Aggie in Draynor Village (The market place)and ask her to mix the dyes, say you want red (3 red berries) orange (2 onions) and blue (2 woad leaves).
Right, mix the red and yellow dyes together to make orange dye, pour it onto one of the goblin mails.
Then put the blue dye onto another of the goblin mails.
Now The Quest Begins:
First of all speak to the bartender in Port Sarim, he'll tell you a little bit about a goblin dispute.
Now go the the Goblin Village, North of Falador and go into the North hut. Speak to the generals and tell them you'll help settle their dispute.
First show them the orange goblin mail.
Then show them the blue goblin mail.
Now how them the brown goblin mail i.e. the one you didn't put any dye on.
They agree that they like the brown armour, i.e. the one they already have, all that bickering for nothing.