how can i make a perfect weapon?

i want to know how to make a perfect weapon.
if i add 2 upgrades to a weapon the text stays bleu and when i see perfect weapons of other guys its kinda yellow/orange like.
and they sell it for much money.
but how can i make one?

You can't make a purple or gold item. Those are dropped from monsters or chests. Adding a blue mod to a gold weapon will not change the gold item to blue either.

"Gold" weapons have to be found.

I order of rarity you have: White (Common) > Blue (Magical) > Purple (Uncommon) > Gold (Rare) > Green (Unique Boss Weapons)

You weapon has remained blue because you found or obtained it as a Blue (Magical). The mods will do nothing to the text description.

[EDIT] As for Greens, they are not always superior to Golds. In fact you could probably piece together a "replica"

Upgrades are always blue text. When you add them to an item, the text becomes the text color of the weapon itself. So if you add a 5/-1 vampiric string and a +30 hp grip of fortitude (both upgrades are in blue text) to a gold Platinum bow. When you hover over the platium bow, in gold, it will be titled "Vampiric Platinum Bow of Fortitude"

The same thing with other colored items. If you get a weapon from a crafter or collector (always blue but perfect stats for their level) and add perfect mods, the weapon will show blue, despite being perfect.

"Perfect" have nothing to do with the color really, since you can mod a collectors weapon to have same stats as another.
Though the weapons you see are gold colored, which indicate that they are rare.

Weapons with blue text are "common"
Weapons with purple text are "uncommon"
Weapons with gold/yellow text are "rare"

You can't change the color of your weapon, they drop wtih it.
hope this helped.

Note that there is no difference between a blue and gold of the same qualities, it is just a vanity thing that drives up the price.

You can get perfect clean weapons from collectors or crafters and add your own upgrades to them. Note that collector weapons cannot be salvaged though so any upgrades you put on them you cannot get back.

I thought it was the rarity of the qualities that determined whether the weapon was rare, uncommon, or common. In other words, gold weps have perfect or near-perfect mods; purple weps have lower quality mods; and so on.

How to make a good wepon

1st off dont use common or uncommon just u gold/orange items(rare)
you cant use green because they are already perfect

For instance i was doin some chest runs i cam upon a (req 8 hammer) 15^50 gold
So i went to the main towns Draks, LA, Center.
Bought a 20/20 halft for 15k
Bought a 30 + health for 10k
Sold the Hammer for 75k
50k profit

hope this helps

Wait, let me get this straight. I put a 20/19 and a +30hp mod on my Chaos Axe. I am able to salvage those mods back?

Yes but you gotta use a sup salvage kit. There is a small chance you get material, but generally you will salvage ONE of the 2 mods.

Chances are you'll get one mod back or, even worse, crafting materials.

You have about 60% chance of getting 1 of the 2 mod's with the sup salvage kit.

A chaos axe is not a collector weapon. You cannot salvage a collector weapon, which is what you get when you trade a collector monster parts:

http://216.86.149.248/wiki/Collectors