Each recipe is orange until its yellow rank and grey from its grey rank. When the ranks differ, it turns green somewhere between the two; the client files give both ranks but not that point. Equal ranks go straight to grey.

Blacksmithing: Fist Weapons
RecipeMakesReagentsNeedsSkill-up
Brass KnucklesTaught by Plans: Brass Knuckles, requires 80
Brass Knuckles
  • Blacksmith Hammer
  • Anvil
Yellow 110Grey 140
Iron FistsTaught by Plans: Iron Fists, requires 130
Iron Fists
  • Blacksmith Hammer
  • Anvil
Yellow 155Grey 180
Mithril ClawsTaught by Plans: Mithril Claws, requires 195
Mithril Claws
  • Blacksmith Hammer
  • Anvil
Yellow 215Grey 235
Thorium CestusTaught by Plans: Thorium Cestus, requires 250
Thorium Cestus
  • Blacksmith Hammer
  • Anvil
Yellow 270Grey 290
Bagh NakhTaught by Plans: Bagh Nakh, requires 300
Bagh Nakh
  • Blacksmith Hammer
  • Master Forge
Yellow 320Grey 340
Blood TalonTaught by Unrevealed item #12831
Blood Talon
  • Blacksmith Hammer
  • Master Forge
Yellow 325Grey 350

From the Forever beta client files, build 1.60.1.70630: the SkillLine, SkillLineAbility, TradeSkillCategory, SpellReagents, SpellEffect, SpellTotems, SpellCastingRequirements and ItemEffect tables.