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.

Leatherworking: Leather Helmets
RecipeMakesReagentsNeedsSkill-up
Brawler's Leather HoodTaught by Pattern: Brawler's Leather Hood, requires 100
Brawler's Leather HoodYellow 125Grey 150
Defender's Leather HoodTaught by Pattern: Defender's Leather Hood, requires 100
Defender's Leather HoodYellow 125Grey 150
Stormrider's Leather HoodTaught by Pattern: Stormrider's Leather Hood, requires 100
Stormrider's Leather HoodYellow 125Grey 150
Totemic Leather HoodTaught by Pattern: Totemic Leather Hood, requires 100
Totemic Leather HoodYellow 125Grey 150
Trapper's Leather HoodTaught by Pattern: Trapper's Leather Hood, requires 100
Trapper's Leather HoodYellow 125Grey 150
Wisdom's Leather HoodTaught by Pattern: Wisdom's Leather Hood, requires 100
Wisdom's Leather HoodYellow 125Grey 150
Brawler's Leather HelmTaught by Unrevealed item #252814
Brawler's Leather HelmGrey 130
Defender's Leather HelmTaught by Unrevealed item #252816
Defender's Leather HelmGrey 130
Stormrider's Leather HelmTaught by Unrevealed item #252818
Stormrider's Leather HelmGrey 130
Totemic Leather HelmTaught by Unrevealed item #252817
Totemic Leather HelmGrey 130
Trapper's Leather HelmTaught by Unrevealed item #252815
Trapper's Leather HelmGrey 130
Wisdom's Leather HelmTaught by Unrevealed item #252819
Wisdom's Leather HelmGrey 130
Azure Gustwoven HoodTaught by Pattern: Azure Gustwoven Hood, requires 175
Azure Gustwoven HoodYellow 185Grey 190
Azure Windraveled CoverTaught by Pattern: Azure Windraveled Cover, requires 175
Azure Windraveled CoverYellow 185Grey 190
Cloudy Gustwoven HoodTaught by Pattern: Cloudy Gustwoven Hood, requires 175
Cloudy Gustwoven HoodYellow 185Grey 190
Cloudy Windraveled CoverTaught by Pattern: Cloudy Windraveled Cover, requires 175
Cloudy Windraveled CoverYellow 185Grey 190
Comfortable Leather HatTaught by Pattern: Comfortable Leather Hat, requires 175
Comfortable Leather HatYellow 195Grey 215
Nightscape Headband
Nightscape HeadbandYellow 200Grey 220
Big Voodoo MaskTaught by Pattern: Big Voodoo Mask, requires 195
Big Voodoo MaskYellow 215Grey 235
Wild Leather HelmetTaught by Pattern: Wild Leather Helmet, requires 200
Wild Leather HelmetYellow 220Grey 240
Wolfshead Helm
Wolfshead Helm
  • Tanning Rack
Yellow 220Grey 240
Helm of Fire
Helm of Fire
  • Tanning Rack
Yellow 245Grey 265
Wicked Leather HeadbandTaught by Pattern: Wicked Leather Headband, requires 255
Wicked Leather HeadbandYellow 275Grey 295
Runic Leather HeadbandTaught by Pattern: Runic Leather Headband, requires 265
Runic Leather HeadbandYellow 285Grey 305
Tooled Leather CrownTaught by Pattern: Tooled Leather Crown, requires 265
Tooled Leather CrownYellow 285Grey 305
Blue Suede HatTaught by Pattern: Blue Suede Hat, requires 280
Blue Suede Hat
  • Sewing Machine
Yellow 300Grey 320
Outlaw's CollarTaught by Pattern: Outlaw's Collar, requires 300
Outlaw's Collar
  • Sewing Machine
Yellow 310Grey 325
Bramblewood HelmTaught by Unrevealed item #22771
Bramblewood HelmYellow 320Grey 340
Living CrownTaught by Pattern: Living Crown, requires 300
Living Crown
  • Sewing Machine
Yellow 320Grey 340
Molten HelmTaught by Pattern: Molten Helm, requires 300
Molten HelmYellow 320Grey 340
Warbear HelmTaught by Pattern: Warbear Helm, requires 300
Warbear Helm
  • Sewing Machine
Yellow 320Grey 340

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