Paper2D Materials - Metallic / Emissive

So I am working on a project right now in which I’m being asked to create materials that make some of our sprites looks metallic (shiny) and another to make some have an emissive glow. I’ve found quite a bit on achieving both of these effects with 3D meshes but can’t seem to find anything that helps me work within the Paper2D framework. I would appreciate any feedback and help trying to get this working.

Issues I’ve run into are…
For Metallic
- Ends up just changing the hue/sat of the sprite and not changing any of the reflective qualities.
- Overall there are no lights in the level, I’m wondering if this is affecting this?
- Use of isometric view, no 3D perspective. Could this also be affecting this?
For Emissive
- I have managed to get emissive color to work, but it doesn’t glow, just changes color.
- While emissive color works, it seems to be ignoring the alpha of the sampled sprite so I end up with a box of color.
- Again wondering if the nature of Paper2D itself is interfering with this?

Open to suggestions!

You might need a normal map for the sprite and apply the emissive and metallic on those normal maps instead. this is just a guess though, but worth a shot. There are apps out there that can turn your sprite sheets into normal map sprite sheet.