diff --git a/CMakeLists.txt b/CMakeLists.txt
index b20f1d6..16e7c4d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,6 +37,7 @@ set(APP_SOURCES
     source/core/system/director.cpp
     source/core/rendering/sdl_manager.cpp
     source/core/rendering/line_renderer.cpp
+    source/core/rendering/color_oscillator.cpp
     source/core/rendering/polygon_renderer.cpp
     source/core/rendering/primitives.cpp
     source/game/options.cpp
diff --git a/Makefile b/Makefile
index 4298a91..771cde0 100644
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,7 @@ APP_SOURCES := \
     source/core/system/director.cpp \
     source/core/rendering/sdl_manager.cpp \
     source/core/rendering/line_renderer.cpp \
+    source/core/rendering/color_oscillator.cpp \
     source/core/rendering/polygon_renderer.cpp \
     source/core/rendering/primitives.cpp \
     source/game/options.cpp \
diff --git a/source/core/rendering/sdl_manager.cpp b/source/core/rendering/sdl_manager.cpp
index 9126ba9..1dcd8d9 100644
--- a/source/core/rendering/sdl_manager.cpp
+++ b/source/core/rendering/sdl_manager.cpp
@@ -3,6 +3,7 @@
 
 #include "sdl_manager.hpp"
 #include "core/defaults.hpp"
+#include "core/rendering/line_renderer.hpp"
 #include "game/options.hpp"
 #include "project.h"
 #include <algorithm>
@@ -277,7 +278,12 @@ void SDLManager::neteja(uint8_t r, uint8_t g, uint8_t b) {
   if (!renderer_)
     return;
 
-  SDL_SetRenderDrawColor(renderer_, r, g, b, 255);
+  // [MODIFICAT] Usar color oscil·lat del fons en lloc dels paràmetres
+  (void)r;
+  (void)g;
+  (void)b; // Suprimir warnings
+  SDL_Color bg = color_oscillator_.getCurrentBackgroundColor();
+  SDL_SetRenderDrawColor(renderer_, bg.r, bg.g, bg.b, 255);
   SDL_RenderClear(renderer_);
 }
 
@@ -287,3 +293,11 @@ void SDLManager::presenta() {
 
   SDL_RenderPresent(renderer_);
 }
+
+// [NUEVO] Actualitzar colors amb oscil·lació
+void SDLManager::updateColors(float delta_time) {
+  color_oscillator_.update(delta_time);
+
+  // Actualitzar color global de línies
+  Rendering::setLineColor(color_oscillator_.getCurrentLineColor());
+}
diff --git a/source/core/rendering/sdl_manager.hpp b/source/core/rendering/sdl_manager.hpp
index 68d6467..52788e5 100644
--- a/source/core/rendering/sdl_manager.hpp
+++ b/source/core/rendering/sdl_manager.hpp
@@ -6,6 +6,7 @@
 
 #include <SDL3/SDL.h>
 #include <cstdint>
+#include "core/rendering/color_oscillator.hpp"
 
 class SDLManager {
 public:
@@ -29,6 +30,9 @@ public:
   void neteja(uint8_t r = 0, uint8_t g = 0, uint8_t b = 0);
   void presenta();
 
+  // [NUEVO] Actualització de colors (oscil·lació)
+  void updateColors(float delta_time);
+
   // Getters
   SDL_Renderer *obte_renderer() { return renderer_; }
 
@@ -47,6 +51,9 @@ private:
   void calculateMaxWindowSize();               // Llegir resolució del display
   void applyWindowSize(int width, int height); // Canviar mida + centrar
   void updateLogicalPresentation();            // Actualitzar viewport
+
+  // [NUEVO] Oscil·lador de colors
+  Rendering::ColorOscillator color_oscillator_;
 };
 
 #endif // SDL_MANAGER_HPP