A new project I've been busy with :-)

[na_th_an]

That's cause it's designed to be run from terminals. Each terminal can be very different to another. Some allow text decorations, some allow a number of colours, some of them need fixed colour values, some other can define R,G,B intensities... That's why ncurses is so awkward.

I misread the message, that's why I posted that silly formula that works in MSDOS if you configure the VGA to deactivate blink thus being able to display all the 16 background colours.

http://www.apmaths.uwo.ca/~xli/ncurses.html#attribute