The first difference is commercial use, and the second difference is product field.

1. Difference 1: Trademarks of different colors have different uses. For example, the red version is used for advertising and promotion of Coca-Cola products, while the blue and white versions are used for the promotion of other Coca-Cola sub-brands or products.

2. Difference 2: In terms of trademark registration, trademarks of different colors can also be regarded as different trademarks and need to be registered and protected separately.