README update.

Ian Wojtowicz · Ian Wojtowicz · commit 000dde73efbb · 2024-09-11T13:03:05.000-07:00
diff --git a/README.md b/README.md
@@ -2,8 +2,8 @@ vdiff
 =====
 
 A tool for comparing similar PDFs and highlighting differences. 
-Renders an output PDF with unchanged details in grey-black, 
-additions in blue and subtractions in red. 
+The system reduces both PDFs to greyscale and renders an output PDF with 
+additions in blue, subtractions in red, and unchanged areas in grey. 
 
 Example
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