Because picture control has such
On the front panel you have to switch to set color tool, right-clik on picture control and select transparent color (upper-right corner, marked with T)
And the angle for rotation should be in radians
proba transp.vi
Unfortunately, we don't have anything to show yet because mostly we have design patterns that still need to evolve a little before they can become 'tools'. Generally, what we have done is utilized Windows API calls for keyboard and mouse emulation and used control references to validate the properties of UIs that we care about.