The contrast can be low with the background color: <img width="348" alt="screen shot 2019-02-15 at 2 02 56 am" src="https://user-images.githubusercontent.com/1269969/52849476-f8a89880-30c5-11e9-8851-cd711324851e.png"> <img width="392" alt="screen shot 2019-02-15 at 2 01 54 am" src="https://user-images.githubusercontent.com/1269969/52849485-fe05e300-30c5-11e9-9bb0-27d51c19d2ac.png"> cc @pq