diff --git a/game.cpp b/game.cpp
index c533fe6..da9ef67 100644
--- a/game.cpp
+++ b/game.cpp
@@ -4,16 +4,14 @@ void init()
 {
     jInit("tutorial_paleta", 320, 240, 2);
     jSetPal(0, 0x00000000);
-    jSetPal(1, 0xffff0000);
-    jSetPal(2, 0xffffffff);
     jCls(0);
     jSurface peiv = jLoadSurface("williams.gif");
-    jLoadPal("pal02.gif");
+    jLoadPal("pal01.gif");
     jSetSource(peiv);
 }
 
 void update()
 {   
     jCls(0);
-    jBlit(0, 0, 0, 0, 29, 64);
+    jBlit(100, 60, 0, 0, 29, 64);
 }
\ No newline at end of file
diff --git a/jUnit.cpp b/jUnit.cpp
index 5ac2e18..9d0f43d 100644
--- a/jUnit.cpp
+++ b/jUnit.cpp
@@ -18,6 +18,7 @@ static Uint32 paleta[256];
 static int jWidth = 320;
 static int jHeight = 240;
 static int jZoom = 2;
+static int transparentColor = 0;
 
 jSurface jNewSurface(int w, int h)
 {
@@ -54,6 +55,7 @@ void jBlit(int dx, int dy, int sx, int sy, int w, int h)
 {
     if (jSourceSurf == NULL)
         return;
+    
     for (int iy = 0; iy < h; ++iy)
     {
         for (int ix = 0; ix < w; ++ix)
@@ -152,7 +154,7 @@ void jFlip()
 
 void jPutPixel(int x, int y, Uint8 color)
 {
-    if (x < 0 || y < 0 || x >= jDestSurf->w || y >= jDestSurf->h)
+    if (x < 0 || y < 0 || x >= jDestSurf->w || y >= jDestSurf->h || color == transparentColor)
         return;
     jDestSurf->data[x + y * jDestSurf->w] = color;
 }