code for color change

//this is the code used in `update.gml`:
col_time = 0
with obj_stage_article {
    if (get_gameplay_time() > 140) {
        col_time = get_gameplay_time()
        if col_time % 380 = 0 {
            swapped = true;
        }
        if col_time % 400 = 0 {
            swap += 1;
            not_white = true;
            if (swap == 5 or swap == 0) {
                   swap = 1;
            }
           }
           if col_time % 420 = 0 {
               swapped = false;
               col_time = 0;
           }
    }
}

//and this in `article1_draw.gml`:
var pan = 0;
if swapped == true {
    timer++;
    pan = timer*100
    draw_triangle_colour(get_marker_x(6), get_marker_y(6)+pan, get_marker_x(7), get_marker_y(7)+pan, get_marker_x(8), get_marker_y(8)+pan, colorf, colorf, colorf, false);
    draw_triangle_colour(get_marker_x(6), get_marker_y(6)+pan, get_marker_x(9), get_marker_y(9)+pan, get_marker_x(10), get_marker_y(10)+pan, colorf, colorf, colorf, false);
} else {
    timer = 0;
}