here is an example from my own work :
I also included the settings to show you the values. notice the base color now look at the emission. Notice the color selected is also a pink color ( the forum is clipping the image embed , you need to click it to see the full length ), but the higher I push the value of the emission the more white it becomes ( look at the thumb preview for emission , it looks white , not like the selected color )
Anyway as mentioned before the scene has to be adjusted around this the environment brightness , other material brightness etc… to get the best balance.
As can be seen this is a working example answering your question. The neon is colored and the scene is not too dark. Again let me just stress it is a balancing act.