Is this expected behavior? Portals not glowing as expected

[mfrisina6600]

I downloaded the mod and it's been working pretty well, but the portals themselves are behaving a little differently from how I expected and thought I'd ask if it's intended or if something might be off. When I fire a portal onto a wall, for a moment, the surrounding area lights up with the portals respective color, indicating the RT is working correctly, but within about a second, the color subsides as the portal finishes its spawn animation. So when launching an orange portal, for example, the surrounding area lights up orange for a moment, but within about a second, the orange glow fades away. Is this really how it's supposed to work? I figure that if this mod is meant to truly follow up Portal 1's RTX, which gave the portals some truly beautiful and intense glow, that this could be a bug I'm encountering. Thought I'd ask. Any help is much appreciated, thanks!

[xoxor4d]

Please post screenshots of the portals