Hmm. Tested out "Projectile graphics now rendered at correct aspect ratio based on the width of the trail, regardless of its length".
The sprites are now working properly (big yay!) but I can't reduce the coreColor alpha without both making the sprite alpha change (eek) and the weapon's explosion color change.
So I still can't have, say, a green custom weapon explosion sprite with a bright purple explosion. To get correct sprites, all my ballistic projectiles need a coreColor of 255s.
Am I just doing it wrong? I just want to see the sprite, no trail, and a yellow-orange explosion when it hits stuff.
And man, am I going to have fun with the custom battle stuff. Can we define "neutral" team stuff or a third team, so that we can have objects that shoot at everybody?