Xiangye Xiao

See overlapped text like this:  Files to reproduce this issue: [hebrew.zip](https://github.com/googlei18n/fontdiff/files/640859/hebrew.zip)

colors to highlight glyph differences are confusing

2

cannot tell the difference between green/red colors and the lighter green/red colors. looks like a bug. build/out/Default/fontdiff --before before/NotoSansCherokee-Regular.ttf --after after/NotoSansCherokee-Regular.ttf --specimen ~/out/chr-Cher_udhr.html --out NotoSansCherokee-Regular.pdf  Files to reproduce this...