When a trademark is registered in black and white, generally speaking, the trademark right is usually limited to the specific expression of the registered trademark. If the trademark registration is submitted in black and white and there are no specific color restrictions, then the trademark registration certificate may not involve color restrictions.

However, the color of a trademark can be an important distinguishing feature of a trademark. If the color of the trademark is substantially changed when it is used, it may affect the identification of the trademark, thus affecting the effectiveness of the trademark right.

In the application for trademark rights, it is recommended that you follow the following principles:

1. Consistency of core elements: the core elements of a trademark, such as shape and font, should be consistent in use to ensure the basic identification characteristics of the trademark.

2. Register multiple versions: If you plan to use the trademark under different color versions, you can consider submitting multiple versions when registering the trademark to cover different color forms.

3. Consulting professional opinions: Before making substantive changes, it is best to consult professional trademark agents or legal professionals to ensure that the changes will not have a negative impact on trademark rights.

Generally speaking, the use of trademark color needs to be weighed according to the specific circumstances to ensure that the use of trademark rights does not violate relevant laws and regulations and does not damage the identification of trademarks.

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