newRPL: proposal for Alpha mode

[Sukiari]

I don't like this idea. I think this is a perfect thing to put on the status line, not in the prompt itself. I think it could be distracting - if you move the cursor over another character, it will blink between the two?

If you put this information in the status line, along will all other status information, the user will always know where to look in order to determine their current mode. This is the simplest way.