set_pen_col_ansi
set_pen_col_ansi(state, VTERM_ATTR_FOREGROUND, state->fg_index + (state->pen.bold ? 8 : 0));
set_pen_col_ansi(state, VTERM_ATTR_FOREGROUND, value);
set_pen_col_ansi(state, VTERM_ATTR_BACKGROUND, value);
set_pen_col_ansi(state, VTERM_ATTR_FOREGROUND, value);
set_pen_col_ansi(state, VTERM_ATTR_BACKGROUND, value);