Have fun:
https://drive.google.com/open?id=1e_wAq ... LkoAVPUdvt
Updated - I decided to tweak the colours a bit for legibility anyway, plus a few bug fixes,Great job! This is exactly what I was looking for, saved me a lot of time.
Small tip, make them inverted so they are more printer friendly. Always good to have a "nice" version like the one you have now and one printer friendly.