After fiddling around with that app, I resulted with this:
Not what I was going for, because there's no color customization.
-Police Hat
-Trans. Purple Three Feathers
-Zombie Face Decal
-Peach Colored Head
-Turquoise Male Body
-Black Mesa Shirt Decal
-LHand: Turquiose Hook
-RHand: Black Hand
-Torso: Black Pants
-LFoot: Black Foot
-RFoot: Turquoise Foot
-Back: Black Backpack (probably doesn't matter)
It'd be great if you could redo this for me properly. The app is useful, though. Thanks.