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
blastula
playback-rate
recent-screens
gitlab-ci
maskformatter
decomposition
columnspan
gherkin
urlmon
streambuf
python-theano
hash
google-classroom
thymeleaf
squishit
unicast
async-profiler
scrollable
astral-plane
d3.js
overload-resolution
cellinfo
retrofit2
editor
html-heading
erlang-ports
geosparql
ant-media-server
rdrop2
tensorflow-datasets