I have downloaded some png icons from the net to make to desktop enhancements . what happened is . I was fixed those icons in some apple kind of lunchbars . It was all ok and fine . trouble started when I tried to change the icon colour using irfanview ( just RBG to GRB type of thing and nothing else ) . when I tried to save the file it asked some options . I saved it . but I see the png icon has changed its property . Its style became bad and it became ugly . also previously it was showing some kind of animation effect . Now those have stopped . Help me guys . tell me how and which is the best way to modify PNG icon files .