Colors, calibration tools and measuring

The App is great and I use it all the time. As a mobile surgeon it took some time to figure out the best way to use it but that worked out ok.

A few thoughts/suggestions:

(1) could the text and line color be changed to white or something that is easier to see? Maybe the user could pick the color?

(2) Since I am mobile clinics have different items they use as a calibration marker. If I could label the markers in the App it would be great (and easier than trying to remember the measurement for each).

(3) Is there a way to decrease the number of mouse clicks it takes to draw the measurement lines for a TPLO? Having to click the menu, then tools and then the item is a bit of a pain.