No, a shift in Gray Balance affects all colors on the printed sheet, not just the gray patches. Gray Balance is the foundation of color consistency; any bias (like a yellow or magenta tint) indicates an excess or deficiency of that specific ink, requiring immediate press adjustment. The actual process begins at the prepress stage, where standard gray control bars must be included in the file layout based on specifications like ISO 12647. Ultimately, Gray Balance is a vital diagnostic tool that helps the press operator spot potential mechanical issues in the press itself, making it essential for overall print stability.