Changing background

padmA ma'am! This is for you. Yes, it is possible to change the background. I have used Irfanview for this purpose. Even Gimp can do this. But at times, it may not br uniform in which case, one should retouch. Any way, here is just an illustration. Left top - the original, left bottom - the same as above with yellow background, right top - negative of the top left, right bottom - different colours for different regions.

Regards! - mOhana