Fix "almost white" icons color + rebuild

app/build.gradle

app/src/chromatic/res/drawable-hdpi/calculus.png

app/src/chromatic/res/drawable-hdpi/lemonderssreader.png

.../chromatic/res/drawable-hdpi/nonfree_google_safetyhub.png

app/src/chromatic/res/drawable-hdpi/nonfree_google_tv.png

app/src/chromatic/res/drawable-mdpi/calculus.png

app/src/chromatic/res/drawable-mdpi/lemonderssreader.png

.../chromatic/res/drawable-mdpi/nonfree_google_safetyhub.png

app/src/chromatic/res/drawable-mdpi/nonfree_google_tv.png

app/src/chromatic/res/drawable-xhdpi/calculus.png

app/src/chromatic/res/drawable-xhdpi/lemonderssreader.png

...chromatic/res/drawable-xhdpi/nonfree_google_safetyhub.png

app/src/chromatic/res/drawable-xhdpi/nonfree_google_tv.png

app/src/chromatic/res/drawable-xxhdpi/calculus.png

app/src/chromatic/res/drawable-xxhdpi/lemonderssreader.png

...hromatic/res/drawable-xxhdpi/nonfree_google_safetyhub.png

app/src/chromatic/res/drawable-xxhdpi/nonfree_google_tv.png

app/src/chromatic/res/drawable-xxxhdpi/calculus.png

app/src/chromatic/res/drawable-xxxhdpi/lemonderssreader.png

...romatic/res/drawable-xxxhdpi/nonfree_google_safetyhub.png