diff --git a/data/shaders/color.frag b/data/shaders/color.frag
deleted file mode 100644
index d6b589f..0000000
--- a/data/shaders/color.frag
+++ /dev/null
@@ -1,11 +0,0 @@
-varying vec4 color;
-varying vec2 texCoord;
-
-uniform sampler2D tex;
-uniform vec4 myColor;
-
-void main(void)
-{
-    vec4 c = myColor * color;
-    gl_FragColor = texture2D(tex, texCoord) * c;
-}
\ No newline at end of file
diff --git a/data/shaders/crt-simple.frag b/data/shaders/crt-simple.frag
index 0aaca13..f90a9e1 100644
--- a/data/shaders/crt-simple.frag
+++ b/data/shaders/crt-simple.frag
@@ -1,23 +1,16 @@
-varying vec4 color;
-varying vec2 texCoord;
+in vec4 color;
+in vec2 texCoord;
+out vec4 fragColor;
 
 uniform sampler2D tex;
-uniform vec4 myColor;
-
-out vec4 fragColor;
 
 void main(void)
 {
-    vec4 c = myColor * color;
-
 	vec4 rgba = texture2D(tex, texCoord);
-    vec4 intensity;
 
-  if(fract(gl_FragCoord.y * (0.5 * 4.0 / 3.0)) > 0.5) {
-    intensity = vec4(0);
-  } else {
-    intensity = smoothstep(0.2, 0.8, rgba) + normalize(rgba);
-  }
-  
-    fragColor = intensity * -0.25 + rgba * 1.1;
-}
\ No newline at end of file
+	vec4 intensity = fract(gl_FragCoord.y * (0.5 * 4.0 / 3.0)) > 0.5 
+		? vec4(0) 
+		: smoothstep(0.2, 0.8, rgba) + normalize(rgba);
+	
+	fragColor = intensity * -0.25 + rgba * 1.1;
+}
diff --git a/src/system.c b/src/system.c
index bfd8f68..80f4f15 100644
--- a/src/system.c
+++ b/src/system.c
@@ -1093,12 +1093,6 @@ void free_shader(Uint32 p)
 	GPU_FreeShaderProgram(p);
 }
 
-void update_color_shader(float r, float g, float b, float a, int color_loc)
-{
-	float fcolor[4] = {r, g, b, a};
-	GPU_SetUniformfv(color_loc, 4, 1, fcolor);
-}
-
 #include <math.h>
 
 static s32 start(s32 argc, char **argv, const char* folder)
@@ -1119,9 +1113,9 @@ static s32 start(s32 argc, char **argv, const char* folder)
 	GPU_Target* screen = GPU_Init(TIC80_FULLWIDTH * STUDIO_UI_SCALE, TIC80_FULLHEIGHT * STUDIO_UI_SCALE, GPU_INIT_DISABLE_VSYNC);
 	GPU_Image* texture = GPU_CreateImage(TIC80_FULLWIDTH, TIC80_FULLHEIGHT, GPU_FORMAT_BGRA);
 
-	s32 color_shader = 0;
-	GPU_ShaderBlock color_block = load_shader_program(&color_shader, "data/shaders/common.vert", "data/shaders/crt-simple.frag");
-	int color_loc = GPU_GetUniformLocation(color_shader, "myColor");
+	u32 crt_shader = 0;
+	GPU_ShaderBlock crt_block = load_shader_program(&crt_shader, "data/shaders/common.vert", "data/shaders/crt-simple.frag");
+	GPU_ActivateShaderProgram(crt_shader, &crt_block);
 
 	{
 		u64 nextTick = SDL_GetPerformanceCounter();
@@ -1136,8 +1130,6 @@ static s32 start(s32 argc, char **argv, const char* folder)
 			{
 				pollEvent();
 
-				float t = SDL_GetTicks()/1000.0f;
-
 				GPU_Clear(screen);
 			
 				{
@@ -1145,9 +1137,6 @@ static s32 start(s32 argc, char **argv, const char* folder)
 					GPU_UpdateImageBytes(texture, NULL, (const u8*)tic->screen, TIC80_FULLWIDTH * sizeof(u32));
 				}
 
-				GPU_ActivateShaderProgram(color_shader, &color_block);
-				update_color_shader((1+sin(t))/2, (1+sin(t+1))/2, (1+sin(t+2))/2, 1.0f, color_loc);
-
 				GPU_BlitScale(texture, NULL, screen, TIC80_FULLWIDTH/2*STUDIO_UI_SCALE, TIC80_FULLHEIGHT/2*STUDIO_UI_SCALE, STUDIO_UI_SCALE, STUDIO_UI_SCALE);
 				// GPU_Blit(texture, NULL, screen, TIC80_FULLWIDTH/2*STUDIO_UI_SCALE, TIC80_FULLHEIGHT/2*STUDIO_UI_SCALE);
 
@@ -1175,6 +1164,8 @@ static s32 start(s32 argc, char **argv, const char* folder)
 
 	SDL_CloseAudioDevice(platform.audio.device);
 
+	free_shader(crt_shader);
+
 	GPU_FreeImage(texture);
 
 	GPU_Quit();