Red glass problem strikes again!

[vicnaum]

The CoronaLight inside is absolutely white, (inside the red transparent LED glass).

I need it to be white in the center, as on reference pic above.

Why is it pink, and why is Green value -2? And how can I fix it?

P.S. It's solved by making the red glass not so red. But I need it red. There's something weird with the color math...

[Ludvik Koutny]

It's probably the WideRGB colorspace problem. It mostly produces a lot worse results than regular RGB when using very saturated colors. It's one of the drawbacks with corona, as you have to watch both your albedo, and your saturation. With other renderers, you need to watch just albedo.

[maru]

The question is, does the red diode/lamp really need a light inside. Couldn't this be made for example with a bitmap in self illumination slot?