Question How can I make Particle System output not be transparent with 2D lit shader?

For the life of me, I can't figure out how to make the particle output of my particle system not transparent.

It looks like this:



Here are the renderer settings on the particle system:



I've checked the Vertex colors on my meshes. I've checked the startColor on the Particle System main module.

I am using a Sprite Lit shader which I suspect is the issue based on some other forum information I saw. It feels crazy that this isn't surfaced anywhere in the GUIs or the APIs that I can find. There is nothing I can find that is setting something to be transparent, but it's showing up that way.

Setting the "Color over Lifetime" or "Color over Speed" doesn't affect the transparency.

I can't find a shader, that works with 2D lights, that isn't outputting as transparent.