That's the design.
And it only shows two colors.
Amber while charging and green for all notifications
HTC UltimEight ?
Well technically you can use the amber LED for other notifications in apps that support custom LED colours. Just select the "red" option. Works for me on Whatsapp
doesn't work for me, it blinks green whatever color I choose. My m8 isn't rooted. Is yours?
Yup, it's rooted. But root access shouldn't affect such a thing, I didn't receive any root access requests when setting LED colour. What app did you try it on?
Hmm that's weird, unrooted and it still works for me. It's probably due to the custom rom then, I'm using the Venom rom