Transparency is dependent on the strength of the bullet, so the Barrett is entirely opaque.
This doesn't explain why the gostek are brighter too!
I think Michal M. modified something in the rendering engine. But he didn't write anything about it in the manual (it's not the first time heh).
Also the trails don't seem to be as good/long/visible as in 1.3.1.
@Kavukamari: you're totally off-topic. I'll reply though:
1) Use F10/Pause.
2) Basically "if the bird doesn't sing, I'll make it sing", reflecting Toyotomi Hideyoshi's way of mind.
3) I already mentioned that in the News forums, as Michal didn't wrote about it in the change log either. ;)
It seems not many people noticed it anyway.
The screen shot from 1.4 below is using a custom 1.3.1 bullet mod. (
download it here)