Index: tools/llvm-pdbutil/DiffPrinter.cpp
===================================================================
--- tools/llvm-pdbutil/DiffPrinter.cpp
+++ tools/llvm-pdbutil/DiffPrinter.cpp
@@ -123,7 +123,7 @@
 
   std::string FormattedItem =
       formatv("{0}", fmt_align(Value, Style, Width)).str();
-  if (C != DiffResult::UNSPECIFIED) {
+  if (C != DiffResult::UNSPECIFIED && OS.has_colors()) {
     setColor(OS, C);
     OS << FormattedItem;
     OS.resetColor();