what does it mean when a reward is green and bold in the field guide?


i just met the admiral and i'm about to set out to what looks to be the final area. but first I've been having fun crafting various weapons and armors, playing with the new HR system. gems give you skills which seems strong at first but... i haven't found many gems, so it's better to go for the weapon skills.
i don't really know if you can slot out gems either.
right now i'm grinding for the anja+ weapon because, uh, maybe something will be vulnerable to fire later? this boss weapon with blast seems really good