When nabisco introduces versions of oreo cookies with colorful fillings around certain holidays, these products are examples of

Seasonal products

Explanation:

If a particular cookie is introduced around certain holiday, then this is considered an example of a seasonal product. A seasonal product is one that appears around a certain holiday. Usually, this is a marketing strategy on the part of the producers, as they believe that releasing a product which is related to a holiday will give them a chance to increase their sales.

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