diff --git a/grid_image.png b/grid_image.png
index 68deef5..4095f87 100644
Binary files a/grid_image.png and b/grid_image.png differ
diff --git a/src/main.rs b/src/main.rs
index c33c0f2..cd83ede 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -24,7 +24,6 @@ struct Args {
 
 
 fn main() {
-
     let args = Args::parse();
 
     let width = 7000;
@@ -72,24 +71,25 @@ fn main() {
         let y = get_point(point) * 1000.0;
         img.put_pixel(
             (width as f64 / 2.0 + x).round() as u32,
-            (height as f64 / 2.0 + y) as u32,
+            (height as f64 / 2.0 - y) as u32,
             Rgb(color)
         );
         img.put_pixel(
             (width as f64 / 2.0 - x).round() as u32,
-            (height as f64 / 2.0 + y).round() as u32,
+            (height as f64 / 2.0 - y).round() as u32,
             Rgb(color)
         );
 
     }
 
-
+    // let color = draw_derivation(&mut img, *colors.last().unwrap());
+    colors.push(color);
 
     img.save("grid_image.png").expect("Failed to save image");
 }
 
 fn get_pitch_quotient() -> u32 {
-    6
+    2
 }
 
 fn get_point(x: f64) -> f64 {
@@ -121,3 +121,16 @@ fn get_image(width: u32, height: u32) -> ImageBuffer<Rgb<u8>, Vec<u8>> {
     }
     img
 }
+
+fn draw_derivation(img: &mut ImageBuffer<Rgb<u8>, Vec<u8>>, last_color: [u8; 3]) ->[u8; 3] {
+    let color = [generate_random(0, 255), generate_random(0, 255), generate_random(0, 255)];
+    for x in 0..=img.width() {
+        for y in 0..img.height() - 1 {
+            let pixel = img.get_pixel(x, y);
+            if pixel == &Rgb(last_color) {
+                img.put_pixel(x, y, Rgb(color));
+            }
+        }
+    }
+    color
+}