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.

Tailoring: Camping
RecipeMakesReagentsNeedsSkill-up
Faction Banner
Faction BannerYellow 20Grey 25
Faction Banner
Faction BannerYellow 20Grey 25
Spinning WheelTaught by Blueprint: Spinning Wheel, requires 140
Spinning WheelYellow 140Grey 145
LoomTaught by Blueprint: Loom, requires 300
LoomGrey 300

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