private void color(Color color) {
		if (color != null) {
			textAttrSet.addAttribute(StyleConstants.Foreground, color);
		}
		else {
			textAttrSet.removeAttribute(StyleConstants.Foreground);
		}

	}
Creates a formatted difference string for an individual line difference
between program1 and program2.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramDiffDetails.java