You can now render the camera view directly to an image using the
SetDeviceCameraToImage() command, so a lot more is possible than before.
1) Not sure what you mean? But, since it's now possible to write your own camera picture taking function, I expect so.
2) I'm not entirely sure if AppGameKit has a command to get the colour from a specific set of co'ords, but I'm sure you could do this with memblocks if nothing else.
3) Since you are displaying the camera image as a sprite, You can treat it like any other sprite, and have text or images or whatever over the photo preview.
I have been toying with the idea of using these new commands to write a "Ghost camera" app, where it works like a normal camera but overlays a ghostly figure every 3 to 5 pictures
Hope that helps