Please see attached screenshot of iTerm2 (left) and Ghostty (right) and their respective fastfetch output.

Note that both iTerm2 and Ghostty are using Catppuccin Mocha. iTerm2 is using the unmodified catppuccin-mocha.itermcolors whereas Ghostty is using theme = catppuccin-mocha set in its config file as the theme is built in. Also note the red boxes were edited into the screenshot obviously and not part of the terminal output :)

As you can see in the coloured bars rendered by fastfetch the output is different. Ghostty is rendering them correctly with the bottom row using the Bright ANSI color. iTerm2, for some reason, has the same value for both Normal and Bright ANSI colors.

In my personal opinion I feel the iTerm2 theme is wrong and Ghostty's theme is correct.

However I do not know if this is just a bug/oversight/mistake or as designed by the Catppuccin iTerm2 theme maintainer(s)? So before I spend time posting the correct values I figured it made more sense to ask if this is how the Catppuccin maintainers want the iTerm2 theme to look? And if so why?