Number and colour of anvil symbol you can get.

The anvil symbol i talking about is the one you get when crafting player made equipment. The file uploaded is the colour of anvil symbol according to no slot, 1 slot, 2 slot and any number of addition def to adventure garb. I at first thought max of 2 red anvil symbol you can get per week. However after someone in my guild get more than 2 red anvil in a week. I start to spend 2m worth of bird wing and manage to craft 15 red symbol in a day but only get two 2 slot adventure garb. So there is no limit to how many red anvil you can get in one week. Edit: Some correction to the uploaded file.

 

Here is some pic to help you better understand the changes of anvil colour.
Picture one: No slot.


Picture two: One slot.

 

So, are we gonna just ignore the color of the actual anvils?(Black, Copper, Silver, Gold) Coz from my perspective, the colors you are mentioning are the glow effects on the anvils.

 

Yup its glow effect on the anvil... I am bad at colour... My guildmate correct me on the colour the anvil glow... I once said the red glowing anvil is orange....

 

Do realise that putting skill point on anvil of smith skill tree doesn't affect the chance of getting different colour anvil glow. If you just put one skill point on the blue glowing anvil but no the other colour(green, yellow and red) glowing anvil, you can still get green, yellow or red glowing anvil.
Today I crafted 99 heaven feather garb with no yellow or red glowing anvil. Below is the table of data obtained.

 

Wow

 

Do i need high lvl prof for higher chances of red anvil?

 

It doesn't affect directly, but prof lvl affects success rate of crafting. More success means more likelyhood of high atk/def items (colored anvils). It won't affect chance of crafting 2s items, since even failures can be 2s.

TL;DR No