I need a program that provides the possibility to set a second layer over the current used program (on WIN/MAC) and show this layer for about a half of 1 second or even less time. If possible the time should be able to be set for testing the results (between 1 second down to 1/60 second). This second layer should show a picture or a text (black or white) on a background color set by user. Both in fullscreen.
Its absolutely neccessary for my university thesis.I need your help!