Red, white or blue (5)
I believe the answer is:
color
I believe this clue is a double definition.
'red' is the first definition.
(thesaurus)
'white or blue' is the second definition.
(I know that white is a type of achromatic color)
(Other definitions for color that I've seen before include "Shade, tint (US sp.)" , "Hue (US spelling)" , "Californian red?" , "brightness in US" .)