#include <stdio.h>
// Remember to `chmod +x sincalir.o` if you donwload it.
// Btw this only works on shells with normal ANSI escapes
// (id est not Windows by default)
int main(){
       printf("16 colours: ");
       printf("\e[1m\e[31m/\e[33m/\e[32m/\e[34m/\e[0m\n");
       printf("True colour: ");
       printf("\e[1m\e[38;2;255;0;0m/\e[38;2;255;255;0m/\e[38;2;0;255;0m/\e[38;2;0;0;255m/\e[0m\n");
}