It would be nice to change the background color etc

Just like to suggest that if possible the actual sun 'altitude' be added to the map view as a degree° figure. It's not easy to get an accurate reading from the 0° to 90° circular scale. I am aware that this figure can be seen in the data view but it would be really nice to see it on the map view.

My device's magnetic sensor/compass is off by approx. 15 degrees, and no amount of calibration can change this apparently. This makes it difficult to use the Sun Path screen. Some sort of manual calibration would be great.