Show overlay for sticky keys only

[az-pz]

Hey, Thank you for your work. This works as intended. I want to see only the control keys (shift, alt, win, etc.) when sticky key is active. I use sticky key and sometimes I forget what key I have pressed or if I have pressed a key once or twice. macOS has this feature where it shows one key press in lighter font and two key presses in bold font when sticky key is active. See this video for a demo : https://youtu.be/v1qedkwP9ck?t=182

I was wondering if such option can be added to this program. Or, could this program be modified to work like that? I don't know much about .Net.

Thank you.