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: Thrown
RecipeMakesReagentsNeedsSkill-up
Cracked Blacksmith HammerTaught by Plans: Cracked Blacksmith Hammer
Cracked Blacksmith Hammer
  • Anvil
Yellow 115Grey 120
Mithril Blacksmith HammerTaught by Plans: Mithril Blacksmith Hammer
Mithril Blacksmith Hammer
  • Anvil
Yellow 200Grey 205
Arcanite Blacksmith HammerTaught by Plans: Arcanite Blacksmith Hammer
Arcanite Blacksmith Hammer
  • Anvil
Yellow 275Grey 280

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