I have found that it is almost impossible to read the tiny font when the temperature falls below zero. I'm using Windows 7. Above zero, I use font size 8 which is very readable. Once below zero, the minus size is ok for a single digit. It even works up to -11. Any other digits are then cut off. To remedy I switch to a size 6 font which is hardly readable at all. I would like to see you add the ability to change "color" when below zero. You now have change colors for below freezing, but it would be very and more beneficial for a color change below zero. Then there would be no need to change font sizes all the time. Please consider.