I have a suggestion! How about a toggle option for a soft audio beep when it turns green, and a boop when it turns red? Then players could play with their eyes closed when they're sleepy or using their imagination, or if they're multitasking with doing something "fun" on the computer or with a partner or with a toy! Lots more utility!
Viewing post in Heat Control - edging trainer comments
What's been done covers the need of several user's suggestion (the noise not only indicate it's green, it also gives you the stroke rhythm without having to focus on the flashing).
And I realise my previous post was ambiguous: I really meant "a tick when flashing green", as opposed to also a tick when the flash goes black too. Anyways,
Please contact me on Discord or Telegram if you *really* want this, can talk there.