Are we able to change a specific line or group of lines (shift + select) within the patterns and assign a color? This would be useful in the purpose of design.

For example, I made an internal in down the middle of a long sleeve just as a marker (which I intend to delete later), and don't want to confuse it with all the other internal lines that are part of the design and are intended to stay as top stitches/seams. Since the sleeve is unfolded, I just need the line to divide my sleeve pattern in half so I can identity front to back, and know how to carry my design from front to back.