diff --git a/main.py b/main.py
index 55a775d..e1fe8cd 100644
--- a/main.py
+++ b/main.py
@@ -26,6 +26,14 @@
 ]
 POINT_NAMES: List[str] = []
 
+# Configure vectors to draw (list of (start_index, end_index) using 0-based indices)
+# Edit this list to add/remove vectors to display
+VECTOR_PAIRS = [(4, 5), (12, 13)]
+# Optional colors (will cycle if fewer colors than VECTOR_PAIRS)
+VECTOR_COLORS = ["r", "b"]
+# Line width for vector arrows
+VECTOR_LW = 4
+
 
 # 3D arrow helper to draw arrows between 3D points
 class Arrow3D(FancyArrowPatch):
@@ -134,17 +142,21 @@
         text = ax.text(p[0], p[1], p[2], name, fontsize=8)
         texts.append(text)
 
-    # Draw vector arrow from point 4 to 5 (thick red arrow)
-    arrow = Arrow3D(
-        [points[4][0], points[5][0]],
-        [points[4][1], points[5][1]],
-        [points[4][2], points[5][2]],
-        mutation_scale=20,
-        lw=4,
-        arrowstyle="-|>",
-        color="r",
-    )
-    ax.add_artist(arrow)
+    # Draw vector arrows as specified in VECTOR_PAIRS
+    arrows = []
+    for i_pair, (idx1, idx2) in enumerate(VECTOR_PAIRS):
+        color = VECTOR_COLORS[i_pair % len(VECTOR_COLORS)] if VECTOR_COLORS else "r"
+        a = Arrow3D(
+            [points[idx1][0], points[idx2][0]],
+            [points[idx1][1], points[idx2][1]],
+            [points[idx1][2], points[idx2][2]],
+            mutation_scale=20,
+            lw=VECTOR_LW,
+            arrowstyle="-|>",
+            color=color,
+        )
+        ax.add_artist(a)
+        arrows.append(a)
 
     ax.set_xlabel("X")
     ax.set_ylabel("Y")
@@ -179,12 +191,13 @@
         for i, p in enumerate(points):
             texts[i].set_position((p[0], p[1], p[2]))
 
-        # Update arrow from point 4 to 5
-        arrow._verts3d = (
-            [points[4][0], points[5][0]],
-            [points[4][1], points[5][1]],
-            [points[4][2], points[5][2]],
-        )
+        # Update all configured arrows
+        for i_pair, (idx1, idx2) in enumerate(VECTOR_PAIRS):
+            arrows[i_pair]._verts3d = (
+                [points[idx1][0], points[idx2][0]],
+                [points[idx1][1], points[idx2][1]],
+                [points[idx1][2], points[idx2][2]],
+            )
 
         ax.set_title(f"Frame {data[frame_idx].frame_number}")
         fig.canvas.draw_idle()