Emission: Red glow while the object itself is white I want to make something like this in Blender:


So I created a Torus and I created two emission materials for it (one for the right side and one for the left side) with two different colors and increased their strengths. And then I added a Fog Glow filter (Glare) and a Volume Scatter to the World. But this is the result:



I want the material to be white and a nice green (for the left side) and purple (for the right side) glow around it (like the reference photo). How to achieve this effect? (Blender v2.82 and Cycles)
If you really want to use Cycles: Add a box which encloses the entire scene, add a principled volume shader to the box and play with Density and Anisotropy:



In comp you can add a Denoise node to save render time and a Glare node to introduce a soft glow:







If the volume takes forever to render, a few blur nodes with various blur amounts can introduce a 'colorful blur' in comp as well: