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: Quivers
RecipeMakesReagentsNeedsSkill-up
Light Leather Quiver
Light Leather QuiverYellow 55Grey 85
Heavy Quiver
Heavy QuiverYellow 145Grey 165
Quickdraw Quiver
Quickdraw QuiverYellow 220Grey 240

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