render.DrawBeam with a sprite material

Whenever I try to draw a beam with a sprite material, its alpha shows as black. So to fix this, I put “$spriterendermode” 7 into the .vmt, but then it is too translucent. I have the color set to Color(255,255,255,255), but it is so translucent that I can barely see it, even though some of it should be clearly visible. Any ideas?

Here are the materials I’m working with.

Agh you guys are no help. I’m going to try an env_spritetrail

Yeah, that works better.