Why does Emission shader dilute colors? EEVEE I would like to create an “outer glow” to Suzanne the monkey so that It emits some red and purple lights (and the plane should reflect them).

To illuminate the monkey, I added the Emission shader and there are two cases:


Using low strength values keeps the colors but it doesn’t emit enough
light.
Using high strength values emits the required light but the colors of the monkey change!


Changing the bloom settings is not a good idea for me as it affects the lighting in the whole scene and other glowing objects. 

I tried to use Light Path node but it didn't help or maybe I didn't know how to use it properly. 

I need to emit light with the same red and purple colors (not yellow and purple with white line separating the two colors). How can I solve this?
added a comment but I think it's an complete answer.
So, here's what you can do.
Turn off bloom settings in eevee and use emmision strength of just 1.
Now,render the thing. After that,go into the compositing tab and click on use nodes. Add in a flare node just before output node. Now you can use bloom effect without changing the mesh's colour.
You can watch this video if you had any problem using glare node-
https://youtu.be/SN8nJXn7CqI