Possible to replace touch ID color sensor?

No it is not possible unless you give up Touch ID altogether.

"UPDATE: DO NOT EVER ATTEMT TO REPLACE THE HOME BUTTON.

Recent experiment indicates that for iphone 6, if the home button sensor chip is damaged or swapped, the phone will not pass through the software restore/update process. So unless you keep the original and functional Touch ID, you will have a phone that is going to brick any time."

The only touch i.d that will work is the stock one

"Hey Tom,

I just did my first iPhone 6 LCD replacement, and I think I also broke the vinger print function.

How do I prevent this from happening in the future ? What action is the most delicate to perform that could damage the fingerprint function ?

Could it be that this happend when i was peeling off the home button connector that is attached to the LCD shield ? ( Like you can see in step 32 iPhone 6 Plus LCD and Digitizer Replacement )

Or witch step is the most dangeres or delicate ?

Those from step 23 to 29 ?

I would really like to know how I prevent this kind off situations in the future.

I would really appreciate it, if you would look trew these steps and could help me preventing to do any damage at all.

If there went something wrong i think it would be by performing step 32, I was really careful with it but the connector wouldn't come lose off the LCD, think I will be using my opener in the future to loosen the adhesive with some heat.

Thank you for considering to answer this.

Best regards Koen"

"Than it would definitely be stap 32 by lifting to home button cable of the front panel. Fixable and cheap is wat i wanted to hear ;-)

Thank you very much for your time Tom !"