Why is lens glare showing weird color?

My scene involves a huge emissive object(the sun), and in some unique angle these weird lens flare showed up, I wonder whether there’s a way to fix it.

Have a look at your post process volume settings, specifically in the Lens Flare category, look at your tinting, you can enable it and set the tints to a particular color, or disable tints and have the lens flares be colored based on the color of the surface they’re projecting from.

Good luck!