Awesome!  Thanks for letting me know I'll go fix those right away.  I was searching for ever yesterday.  And I'll make sure to pay more attention in the future.

edit: I found the white spot and fixed it.  I didn't find the gray pixels specifically but I redid that whole area.  Later tonight I'll just go ahead and double check the whole border.  Thanks for letting me know guys.

You got 1 white pixel (col #5) in the syringe and 2 gray pixels on the border (col #13), that's the ones you're missing.

 @cure.  How can you tell?  I made sure the pallette was only 16 colors.  Or I thought I did anyway.

edit: Just went back and counted the colors and I've got 16.  Three grays, an off white, three blues, a black, four reds, and four browns.

you seem to be 2 colors over the challenge limit