It seems to me that some colors need の when describing an item, yet others
don't.

For example:

  * 黄色のくつ (Yellow shoes; has の)
  * 赤いくつ (Red shoes; no の)
  * オレンジ色のくつ (Orange shoes; has の)
  * 青いくつ (Blue shoes; no の)

It would seem the kanji for color (色) isn't always mandatory, which I would
guess is also related.

Is there some kind of distinction per color, or is it just two ways of saying
the same thing?
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2018-08-07T18:21:59.390
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2018-08-07T18:21:59.390
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question
grammar nuances particles
Use of の in colored objects