rutilant (ROOT-uh-luhnt) - adj., shining or glowing with a red(dish) light.
Or golden, per some dictionaries. I admit I'm having trouble finding a use for this one, outside of poetic descriptions of soft-lit red hair, but it's really cool that we have a word for it. (Your challenge is clear.) First used in the late 1400s in the form rutilaunt, from Latin rutilant-, stem form of rutilāns, present participle of rutilāre, to make red/be reddish, from rutilus, red/reddish, ultimately from PIE root *reudh-, red -- so a cognate of ruddy, not to mention russet, ruby, and rouge.
---L.
Or golden, per some dictionaries. I admit I'm having trouble finding a use for this one, outside of poetic descriptions of soft-lit red hair, but it's really cool that we have a word for it. (Your challenge is clear.) First used in the late 1400s in the form rutilaunt, from Latin rutilant-, stem form of rutilāns, present participle of rutilāre, to make red/be reddish, from rutilus, red/reddish, ultimately from PIE root *reudh-, red -- so a cognate of ruddy, not to mention russet, ruby, and rouge.
---L.