In what color(s) ink must performance evaluations be signed?

Performance evaluations must be signed in black or blue-black ink to ensure clarity and permanence. These colors are typically used because they reproduce well on copies and provide a clear, professional appearance, which is essential for official documentation. Using these specific colors helps maintain uniformity across official documents, thus preventing confusion regarding the authenticity of the signatures. Additionally, black and blue-black inks are commonly accepted by administrative offices for formal records, ensuring that the evaluations are easily read and stored with a consistent standard.