Replacing Gogo with Daryl

Your palette 2 is out of order... if you look at other sprites that share the palette they'll look strange too. You could try to manually reorder the palette by opening each color individually, writing down its components (Taking the RGB should be enough), and then setting the color in the correct index to those proper components.

As described in the tutorial Madsiur linked, the colors must be indexed as follows:
(0) Transparency
(1) Outline
(2) Eyewhite
(3) Eyecolor
(4) Hair Light
(5) Hair Dark
(6) Skin Light
(7) Skin Dark
(8) Clothes A Light
(9) Clothes A Dark
(10) Clothes B Light
(11) Clothes B Dark
With the remaining four colors in the palette unused.

It may take a while to do so, but that should (probably) fix the problem.