images contain embedded non-free IEC61966-2.1 color profile (Open Source compliance)
The following images contain embedded non-free IEC61966-2.1 colour profile:
app/wiki.png
images/default_cover_photos/*
images/icons/10/add.png
images/icons/10/delete.png
images/icons/10/edit.png
images/icons/10/gear.png
images/icons/10/menu.png
images/icons/10/star.png
images/icons/16/add.png
images/icons/16/delete.png
images/icons/16/edit.png
images/icons/16/gear.png
images/icons/16/menu.png
images/icons/16/star.png
images/icons/22/add.png
images/icons/22/delete.png
images/icons/22/edit.png
images/icons/22/gear.png
images/icons/22/menu.png
images/icons/22/star.png
images/icons/48/add.png
images/icons/48/delete.png
images/icons/48/edit.png
images/icons/48/gear.png
images/icons/48/menu.png
images/icons/48/star.png
images/icons/add.png
images/icons/audio.png
images/icons/delete.png
images/icons/edit.png
images/icons/gear.png
images/icons/image.png
images/icons/lock.png
images/icons/menu.png
images/icons/play.png
images/icons/plugin.png
images/icons/star.png
images/icons/text.png
images/icons/unlock.png
images/icons/video.png
images/icons/zip.png
images/search_18.png
images/video_poster.jpg
library/bootstrap-colorpicker/dist/img/*
$ exiftool {IMAGE.png}
Profile Copyright : Copyright (c) 1998 Hewlett-Packard Company
Profile Description : sRGB IEC61966-2.1
This means that (proprietary?) graphics editor saved image(s) with embedded non-free IEC61966-2.1 colour profile.
IEC61966-2.1 prohibits modification, see http://www.color.org/srgbprofiles.xalter#v2
Non-free ICC profile can be removed using the following command
exiftool -icc_profile"-<=" {IMAGE.png}
or using GIMP (Image --> Mode --> Convert to Color Profile).