diff --git a/README.md b/README.md
index 77977c4..833599f 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,10 @@ sudo apt-get install libsdl2-dev
 
 ## Controls
 
-### I/O
+### General
 
 - `E` Export
+- `H` Toggle Guides
 
 ### Select
 
diff --git a/chr6 b/chr6
new file mode 100755
index 0000000..13ffa40
Binary files /dev/null and b/chr6 differ
diff --git a/chr6.c b/chr6.c
index 35a1aaf..252f04b 100644
--- a/chr6.c
+++ b/chr6.c
@@ -6,7 +6,8 @@
 #define color1 0x000000
 #define color2 0x72DEC2
 #define color3 0xFFFFFF
-#define color4 0x333333
+#define color4 0x444444
+#define color0 0x111111
 
 typedef struct Point {
 	int x;
@@ -20,10 +21,11 @@ typedef struct Brush {
 } Brush;
 
 unsigned char buffer[4096];
-int colors[] = {color1, color2, color3, color4};
+int colors[] = {color1, color2, color3, color4, color0};
 int WIDTH = 128 * ZOOM + PAD * 2;
 int HEIGHT = 128 * ZOOM + PAD * 2;
 int FPS = 30;
+int GUIDES = 1;
 SDL_Window* gWindow = NULL;
 SDL_Renderer* gRenderer = NULL;
 SDL_Texture* gTexture = NULL;
@@ -59,7 +61,7 @@ draw(uint32_t* dst, int id, int color)
 	Point p;
 	p.x = px + tx + (id % 8);
 	p.y = ty + ((id % 64) / 8);
-	pixel(dst, p, colors[odd && color == 0 ? 3 : color]);
+	pixel(dst, p, colors[GUIDES && odd && color == 0 ? 4 : color]);
 }
 
 void
@@ -194,6 +196,10 @@ keyhandler(SDL_Event* event, Brush* b)
 	case SDLK_e:
 		save();
 		break;
+	case SDLK_h:
+		GUIDES = !GUIDES;
+		redraw();
+		break;
 	case SDLK_1:
 		b->color = 0;
 		break;