- The added line is THIS COLOR.
- The deleted line is THIS COLOR.
* カラープロファイル [#z97f8833]
- A New Color Architecture for Ghostscript
-- https://wiki.linuxfoundation.org/images/7/71/A_New_Color_Architecture_for_Ghostscript.pdf
- Embed ICC color profile in PDF
-- https://stackoverflow.com/questions/31591554/embed-icc-color-profile-in-pdf
gs -o cmyk-doc.pdf \
-sDEVICE=pdfwrite \
-dOverrideICC=true \
-sDefaultCMYKProfile=/path/to/mycmykprofile.icc \
-sOutputICCProfile=/path/to/mydeviceprofile.icc \
-dRenderIntent=3 \
-dDeviceGrayToK=true \
input-doc.pdf