dvipdfmx:warning: ICC profile format spec. version 4.3.0 not supported in current PDF version setting.
dvipdfmx:warning: ICC profile not embedded.

pdf_color>> ICC Profile Info
pdf_color>> Profile Size:       672 bytes
pdf_color>> CMM Type:   lcms
pdf_color>> Profile Version:    4.3.0
pdf_color>> Device Class:       mntr
pdf_color>> Color Space:        RGB
pdf_color>> Connection Space:   XYZ
pdf_color>> Creation Date:      2021:10:26:06:58:06
pdf_color>> Primary Platform:   APPL
pdf_color>> Profile Flags:      00:00:00:00
pdf_color>> Device Mnfct:       (null)
pdf_color>> Device Model:       (null)
pdf_color>> Device Attr:        00:00:00:00:00:00:00:00
pdf_color>> Rendering Intent:   Perceptual
pdf_color>> Creator:    lcms
pdf_color>> Illuminant (XYZ):   0.964 1.000 0.825
pdf_color>> Checksum:   (null)

＠ GrahicsMagick:

SX2@makoto 22:03:31/250213(..git-work/F7000s-certify)% pkg_info -IF /usr/pkg/bin/gm
GraphicsMagick-1.3.42 Tools and libraries for reading, writing, and manipulating images

gm mogrify -strip  images/$i