History chart BMI gradients

shows the table on the history page with yellow and green days, there's a very subtle gradient indicating the bmi range of the value so you can visualise change over time
there is a gradient here, i assure you

If you have you height entered in settings, the history graph now lets you choose BMI to display as the color option. Not so useful on a day-by-day basis, but when you have many months of data it can be a nice way of visualising your progress.