Color is not claimed as a feature of the mark.
The certification mark, as intended to be used by authorized persons, is intended to certify that the document on which it appears has met the applicant's standards for documents that are clear, concise, and readily understood by the target audience.
The mark consists of a round seal with grayscale, the writing tip of a quill pen, and the word elements "Pei", "PLAIN ENGLISH INSTITUTE", and "PLAIN ENGLISH CERTIFIED DOCUMENT".