Do all Italian adjectives have to agree with the noun in gender and number? What if you include a color? For example, "a light green car" should be "una macchina verde chiara" but I cannot find any examples of the color verde used with the feminine form of the adjective chiaro.
2 Answers
Adjectives always have to agree.
The example you mention is actually very good, because it shows a mismatch in this sense.
You have to say
Una macchina verde chiaro
because chiaro here refers to "verde" and not to "macchina". So you need the masculine because of the agreement with verde itself, "verde chiaro" is a composite adjective.
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6It may be useful to remember that "verde" (as well as colors in general) is felt as masculine because there's an understated "colore" in there. Commented Nov 12, 2013 at 19:35
In your example the color of the car is "light green", it's like you say "una macchina di color verde chiaro" or more shortly "una macchina verde chiaro".
I think it's simplier to understand with yellow: "una macchina gialla", but "una macchina (color) giallo chiaro".
But you can say "una tonalità (shade) verde chiara" even if "una tonalità (color) verde chiaro" is possible.
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1You are missing OP's point, which boils down to: if in "una macchina verde" verde is feminine like any other adjective would be (although the declination here doesn't show it), why do you say "una macchina verde chiaro", instead of "una macchina verde chiara"? Commented Nov 12, 2013 at 16:13
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