After trademark registration, the color of the trademark pattern is generally not allowed to be changed at will, because trademark registration is based on a specific logo to obtain protection. The Trademark Office will consider the uniqueness of a mark, including the combination of pattern and color, when reviewing a trademark application.

If you wish to change the colors of your trademark, you may need to resubmit your trademark registration application to ensure that the new color combination complies with the Trademark Office's regulations. In this case, the new trademark pattern and color combination will be regarded as a new trademark and will need to be reviewed and approved by the Trademark Office.

During the trademark registration process, color is often considered an important part of a trademark. If a trademark changes color during use, and this change is not noticeable to consumers, it may not affect the validity of the trademark. However, if the color changes significantly, the trademark registration may need to be reconsidered.

It is recommended that when considering any trademark changes, you consult with a professional trademark attorney or legal professional to ensure compliance and receive the best advice.

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