These are the colors (Testors) which I've found most closely match the pictures (boxes, Osprey books, etc.). For one shade colors, here are the Testors numbers; black (1149 or 1749), white (1168 or 1768), gold (1144 or 1744), silver (1146), steel (1180 or 1780), brass (1182 or 1782), flesh (flat-various available shades or mixtures). Testors is sold in Europe under the name "Model Master".
NOTE: colors based on the Osprey books- Men At Arms series #69,Elite series #7B,Warrior series #27, and the box art.
ALL COLOR NUMBERS ARE TESTORS UNLESS OTHERWISE STATED.
NOTE: Except for the popular reds, tunic and crest colors are pretty much optional.
White is the most common cuirass color but others also seem to have existed.

HOPLITE WITH PLATE CUIRASS (HAT #8045)
BODY PART(S)--COLOR
cuirrass,helmet,crest holder,greaves--brass
crest--yellow 1169 (or black)
cuirass waist strips--white (or sky blue 1162)
cuirass shoulders--green,OD 1164 (or sky blue 1162)
tunic--insignia red 1705 (or blue,bright 2032)
strap,scabbard,shoes (if present)--leather 1736
spear--wood 1735
sword & handle,scabbard trim,spear tips--steel
hair--brown,ital.dark 2111
hands,face,legs--flesh
base--green 2029





HOPLITE WITH MUSCLE CUIRASS (HAT #8045)
BODY PART(S)--COLOR
cuirrass,helmet,greaves--brass
cuirass waist strips (if present)--white
crest holder--black & white checker
crest,tunic--insignia red 1705
strap,scabbard,shoes--leather 1736
sword & handle,scabbard trim--steel
hair--brown,ital.dark 2111
hands,face,legs--flesh
base--green 2029





HOPLITE WITH SMOOTH CUIRASS (HAT #8045)
BODY PART(S)--COLOR
cuirass--white (or black)
waist plates--white (or leather 1736)
crest (if present)--insignia red 1705 (or black & white)
cuirass trim--insignia red 1705 (or white)
tunic--blue,bright 2032 (or white)
helmet,greaves--brass (or black)
crest holder (if present)--brass (or black & white checker)
strap,scabbard,shoes (if present)--leather 1736
spear--wood 1735
sword handle,scabbard trim,spear tips--steel
hair--brown,ital.dark 2111
hands,face,legs--flesh
base--green 2029





HOPLITE WITH TUNIC
BODY PART(S)--COLOR
top tunic--insignia red 1705
under tunic--blue,bright 2032
helmet,greaves--brass
crest holder--red 1150 & white checker
crest--pale green 1716
strap,belt,scabbard--leather 1736
spear--wood 1735
sword handle,scabbard trim,spear tips--steel
hair--brown,ital.dark 2111
hands,face,legs--flesh
base--green 2029





HOPLITE WITH TUNIC & PILOS HELMET (HAT #8045)
BODY PART(S)--COLOR
tunic--violet,Napol. 2013 (or white)
scabbard,quiver,belt,strap,shoes--leather 1736
helmet--brass
spear--wood 1735
scabbard trim,sword handle,spear tip--steel
hair--brown,ital.dark 2111
hands,face,legs--flesh
base--green 2029