I figured I was bored, so I though I'd make a little pixel portrait of a random tree I though of, using only colors from the Windows System palette which I found in Photoshop. I'm happy about the outcome, but I'm still concerned about the lower left and the lower middle part of the tree's leaves...

Anyway, I hope you like it, and (hopefully not too negative) feedback is always appreciated :)

Also, I tried shading the tree leaves according to the light source (which is in the upper right corner) but I failed to, unfortunately. Unless I was doing something wrong.

Note: The background in the preview is a little different than the background in the detailed picture because the original sky gradient had the lighest blue at the bottom and the darkest blue at the top. It was a little while back when I created this, and today, I figured it didn't look right so I simply reversed the order of the sky gradient colors. For some reason, I didn't bother to change the preview as well...