diff --git a/Entity.cpp b/Entity.cpp
index 22e38d2..45a022e 100644
--- a/Entity.cpp
+++ b/Entity.cpp
@@ -16,6 +16,8 @@ eg3d::Entity::Entity(const Entity& other): Geometry(other.device)
 }
 
 void eg3d::Entity::loadDefaults() {
+	mConstBuf.color = { 1.0f, 1.0f, 1.0f, 1.0f };
+	
     XMStoreFloat4x4(&mConstBuf.worldMatrix, XMMatrixIdentity()); // egységmátrix betöltése a világ-mátrixba
 	mSRTProps.loadDefaults();
 	constructWorldMatrix();
@@ -54,7 +56,7 @@ void eg3d::Entity::constructWorldMatrix() {
 	XMStoreFloat4x4(&mConstBuf.worldMatrix, w);
 
 	// konstansbuffer felmásolása a videokártyára
-	bufferMapCopy(mConstBufRes, static_cast<void*>(&mConstBuf), sizeof(CB_Entity));
+	updateConstantBuffer();
 }
 
 void eg3d::Entity::createConstantBuffer()
@@ -62,6 +64,16 @@ void eg3d::Entity::createConstantBuffer()
 	mConstBufRes = createBuffer_UH(device, calc256AlignedSize(sizeof(CB_Entity)));
 }
 
+void eg3d::Entity::updateConstantBuffer()
+{
+	bufferMapCopy(mConstBufRes, static_cast<void*>(&mConstBuf), sizeof(CB_Entity));
+}
+
+void eg3d::Entity::setColor(float r, float g, float b)
+{
+	mConstBuf.color = { r, g, b, 1.0f };
+	updateConstantBuffer();
+}
 
 // ----------------------
 
diff --git a/Entity.h b/Entity.h
index 8d0aa6b..b2d617c 100644
--- a/Entity.h
+++ b/Entity.h
@@ -31,6 +31,7 @@ namespace eg3d {
 
     	// TODO konstansbuffer létrehozása, feltöltése
 		void createConstantBuffer(); // konstansbuffer létrehozása
+		void updateConstantBuffer(); // konstansbuffer frissítése
     public:
         Entity(const ComPtr<ID3D12Device> &device);
 		explicit Entity(const Entity& other); // másolókonstruktor
@@ -41,6 +42,8 @@ namespace eg3d {
         SRTProps getEntitySRT() const; // SRT-tualjdonságok elkérése
 
         void draw(ComPtr<ID3D12GraphicsCommandList> commandList) const override;
+
+		void setColor(float r, float g, float b); // szín beállítása
     };
 
 }
diff --git a/RUNTIME/shaders/basic_shader.hlsl b/RUNTIME/shaders/basic_shader.hlsl
index e2171d0..88410b3 100644
--- a/RUNTIME/shaders/basic_shader.hlsl
+++ b/RUNTIME/shaders/basic_shader.hlsl
@@ -19,6 +19,7 @@ cbuffer CFrame : register(b0)
 cbuffer CEntity : register(b1)
 {
     float4x4 worldMatrix;
+    float4 color;
 }
 
 VSOutput vs_main(VSInput input)
@@ -26,7 +27,7 @@ VSOutput vs_main(VSInput input)
     VSOutput output; // vertex shader kimenete
     
     output.position_H = mul(float4(input.position_D, 1.0), mul(worldMatrix, mul(viewMatrix, projMatrix)));
-    output.color = float3(1.0, 1.0, 1.0);
+    output.color = color;
     
     return output;
 }
diff --git a/const_bufs.h b/const_bufs.h
index ab5fe6b..376b2ed 100644
--- a/const_bufs.h
+++ b/const_bufs.h
@@ -18,6 +18,7 @@ struct CB_Frame
 
 struct CB_Entity {
     DirectX::XMFLOAT4X4 worldMatrix; // világ-mátrix (modell-mátrix)
+	DirectX::XMFLOAT4 color; // szín
 };
 
 #endif //CONST_BUFS
diff --git a/main.cpp b/main.cpp
index 1b13491..265825d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -83,6 +83,8 @@ void mouseCB(EventHandlerCBData * pCBData)
 	pTeapot->loadBinarySTL("assets/utahteapot.stl", ImportAdapters::IAD_SwapYZ_RH);
 	pTeapot->setEntitySRT(srtProps);
 
+	pTeapot->setColor(0.8f, 0.8f, 0.1f);
+	
 	gDrawables.push_back(pTeapot);
 }