diff --git a/frag.glsl b/frag.glsl
index 95275bd..63a0030 100644
--- a/frag.glsl
+++ b/frag.glsl
@@ -4,5 +4,12 @@ out vec4 FragColor;
 
 void main()
 {
-    FragColor = vec4(1.0, 0.5, 0.2, 1.0);
+    vec3 objectColor = vec3(1.0, 0.5, 0.2);
+    vec3 lightColor = vec3(1.0, 1.0, 1.0);
+    float ambientStrength = 0.1;
+
+    vec3 ambient = ambientStrength * lightColor;
+    vec3 result = ambient * objectColor;
+
+    FragColor = vec4(ambient, 1.0);
 }
diff --git a/src/hello.cpp b/src/hello.cpp
index f17e268..45d5e23 100644
--- a/src/hello.cpp
+++ b/src/hello.cpp
@@ -130,9 +130,6 @@ int main()
     GLuint shaderProgram = compileShaderProgram();
     Icosphere sphere(2);
 
-    // Wireframe
-    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-
     // Main loop
     while (!glfwWindowShouldClose(window))
     {