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1) Back to the Original Design.

2) This Alternative Design shows the Color explicitly.
Any other characteristic that occurred frequently could also be shown explicitly.
When it did not apply to a particular product, it would simply be left blank, or NULL, (preferably NULL).
This makes the corresponding Database easier to use and understand.
There is no downside to this approach. A Data Modelling purist might object but the design is perfectly acceptable.
Dezign Data Model for Products and Generic Characteristics

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