Invert colour disappeared on new MS Paint? (Windows 7)?

So I have the Windows 7 version of MS Paint, but the 'invert colour' isn't there.... I just spent hours doing something and I'll have to just delete it if I can't use invert colour.
I know it's moved to select->selection options. And that you have to 'select all' first, BUT IT STILL ISN'T THERE.
I even have a screenshot - http://i876.photobucket.com/albums/ab322/JustJodie_95/screenshot.png
And this is what it SHOULD look like - http://windowsvj.com/wpblog/wp-content/uploads/2010/01/invertcolors1.png

Any ideas????????
What's really annoying, is literally 30 seconds after posting this, I figured it out. Left click.
Sigh. Don't both answering.
 
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