bold_brightens_ansi_colors = true

When true (the default), PaletteIndex 0-7 are shifted to bright when the font intensity is bold.

This brightening effect doesn't occur when the text is set to the default foreground color!

This defaults to true for better compatibility with a wide range of mature software; for instance, a lot of software assumes that Black+Bold renders as a Dark Grey which is legible on a Black background, but if this option is set to false, it would render as Black on Black.