Good for checking if 2 Channel sound is really 2 channels or just playing mono through 2 channels aMg-Jisra'ayl.zip
In standard Israel colors, if there is no stereo and just mono, you will not see much blue.

You can of cause use it for other things, but this is pretty effect - I am sure one could do other colors - this is just Israel themed version. But one can do the same thing with Piano Rainbow, with note colors as well, so a little more information.
But non the less, I have used this to figure out if something is mono, I did not really use COMBination mode much, I think it stands for. But it is kinda helpful I have found out, to discern if something is really stereo or mono, as to say 2 channels or 1 channel while playing stereo.

Overall these 2 gradients are very simple, but use them together to get the effect, Outline 25% opacity and alpha mode is two good choices.

And a last one.

-- Darkijah