...pretty minimalist so far! (judging from the post above! :-)So here goes:
RED: Drums (and more particularly the drum kit)
PINK: Violin (used to think: LILAC)
CORAL(a blend of red,orange and pink): African,Shamanic and Oriental drums and frame drums (used to place here also the harmonica(mouth organ) and the accordion; but now,tend to think they are MAGENTA!)
ORANGE: Saxophone
GOLD: Sitar(...or maybe it's ORANGE...) Brass instruments found in Jazz music (used to place here: the lead electric guitar!)
YELLOW: Rhythm electric guitar
OLIVE GREEN: elecro-acoustic guitar
GREEN: acoustic guitar + singing (Folk music!)
TURQUOISE: synthesizer, electric keyboard (New Age music)
BLUE: Piano (Classical music) (LIGHT BLUE: used to think: classic harp (not Celtic harp!)
ROYAL BLUE: Bass guitar, double bass Contemporary classical music Blues
VIOLET: Cello, Church organ
MAGENTA: Flute
DEEP MAGENTA( the "colour" which contains the whole specrum but with a predominance of violet, magenta and red): a mastership of a fair number of instruments! :-)