Based on the images and PorterDuffModes in this page I downloaded images, initially even though they are png they had light and dark gray rectangles which were
boost-beast
aws-app-config
lattice
glide-golang
strlen
readyroll
prose-mirror
fauxton
elasticsearch">elasticsearch
android-testing
room
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skeleton-css-boilerplate
libtiff.net
worldtimeapi
muenchian-grouping
garbage-collection
unnamed-namespace
fabric8-maven-plugin
colyseus
geography
railsapps
apollostack
pinned-shortcut
ruby-on-rails-5.2
openconnect
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gnome
appcelerator-mobile
elasticsearch