Change field color when another field changed

aas

Hello everybody. I have 2 different custom fields in issue (e.g cF1 and cF2) and I need functionality when I change cF1 the cF2 should changed automatically to another value and should be hilighted with some color. 

I suppose I can use Custom Script Field, where in InlineScript field I can write script which returns the value of cF2 to custom template field, where I can change color of field. 

But:

1. what should I do to change cF2? (Write a custom listener script, which changes cF2 when cF1 changed or I can change cF2 in the Custom Script Field or some other ideas)?   

2. how to write template, which changed field background? (please example) 

Gezim Shehu [Communardo]

If you create a Scripted Field, it does not hold any value.

It only renders what you have scripted, on the fly.

 

So if cf2 is outputting a value, based on cf1 value, then if cf1 changes, also the cf2 output will change.