BLF Other Voicemail

Hi we use Sangoma S500 phones and I have a question about BLF setup

We have a line created with a voicemail box to catch our main line for out of hours. I have assigned a line button on the phone using the template and set it to BLF and the number to be *98XXXX

When the line has a voicemail the light goes red (as expected) however when the voicemail’s have been cleared, the line goes green, is there a way to just make it turn off rather than have a green light ?

No we use multi color buttons so if it’s BLF and it’s no in use then its green. If its in use its red.

Ok cool, any other way to achieve what im after ?