This is a very simple project I have worked on.
It is a big white "disc" that is added to the lense flares to simulate the blinding effect from the sun.
[External Link Removed for Guests]
To disable it, just delete
"Texture=lens_flare_sun_big.dds scale=9.5 position=0.65 opacity=1.3 additive=1 size=6.0"
from specialfx.tec
I would like to find a way to bleach the colors in the scene behind the effect, but that is a really hard thing to do obviously.