Improve TUI use input / reply visibility

What variant of Codex are you using?

cli

What feature would you like to see?

Currently, the user prompts and the replies are marked with dim • symbol which is hard to eye-grep in the conversation log (which is basically a wall of text). At the same time, the internal requests are highlighted with bold colors and sometimes with terminal-wide dash lines.

Can you somehow highlight the user input (for example as bright yellow/cyan/white text) and the final answer, so they are better recognizable in the log. If just the user inputs are clearly highlighted, this may make navigating the log much easier.

Additional information

_No response_