Warriors: Crystalpelt, Crystalfur, Crystalflower, Crystaltail, etc.
Apprentice: Crystalpaw
Kit: Crystalkit
Hope these help!
Kestrelwing
Emberstrike, Roseblade, and Violetclaw would be fitting warrior names for Amberpaw, Rosepaw, and Purplepaw. Fireheart, Thornfang, and Lavenderstorm are strong and fitting warrior names for Amberpaw, Rosepaw, and Purplepaw. Blazeclaw, Petalfeather, and Shadowwhisker would be powerful warrior names for Amberpaw, Rosepaw, and Purplepaw.
goodzila
Flashfoot Fieldpelt Aurafire
Yes, those are suitable warrior names for a gray tabby cat in a fantasy or role-playing setting. They sound unique, nature-inspired, and match well with the cat's fur color and characteristics.
Here a few examples: Destinypool Leafsong Mistyheart Nightheart Featherfur
The Warrior's Drill
"Crystal" might be good, because crystals are clear, but they can change color in the light.... maybe Crystalsun?
Sweetbriar, Briarpelt, Hazelpelt/fur, Mousefur/pelt.
FireClanWildClanLeafClanCloudclanMoonClanStormWindClanStormClanBlueClanSilverClanDarkClanArticClanDustClanSnowClanMidnightClanForestClanWoodClanNightclanIceclanStreamclanLotusclanBirdclanWhisperclanMoonclanMidnightclanDuskclanDawnclanAshclanBlackclanSnakeclanBirdclanTreeclanFlowerclanBerryclan
yes
Peacekeeper's Arsenal Guardian's Array Defender's Apparatus Protector's Gear