A few of these are on my guilty pleasures list.
I think these are usable:
AcaciaAlchemy
Amaranth
AmberAmethystAmnesty
Ametrine
Apple
Arrow
AspenAutumnAzureBelladonna
BerylBlessing
BriarBrookBryonyCadenceCalypsoCedarCelandineCerulean
ChanceCherishChrysanthemum
Cinnamon
CorianderCricket - cute nickname
DahliaDaisyDestinyDream
I think these shouldn't be used on children:
Adore - nice meaning, but sounds like "a door"
Allure
Amanita - sounds like "a man-eater"!
Apprentice
Asphodel
Avenue
Bliss
Blue - some colour names are nice, this is just boring
Bluebell
Butterfly
Calico - a cats name
Candle
Canna
Caory
Celestial
Chalet
Chanterelle
Chardonnay
Chateau
CherryCinnabar
ClemencyClover - a cows name
DaffodilDay - not awful, just boring
Defiance - asking for trouble!
Deuce
DiamondDolphin
Dust - dirty and gross