diff --git a/include/apple2.h b/include/apple2.h
index 3804e03..e287b3d 100644
--- a/include/apple2.h
+++ b/include/apple2.h
@@ -6,12 +6,21 @@
 #include "vm_screen.h"
 
 enum video_modes {
+    VIDEO_40COL_TEXT,
     VIDEO_LORES,
     VIDEO_HIRES,
+    VIDEO_80COL_TEXT,
     VIDEO_DOUBLE_LORES,
     VIDEO_DOUBLE_HIRES,
 };
 
+enum color_modes {
+    COLOR_GREEN,
+    COLOR_AMBER,
+    COLOR_GRAY,
+    COLOR_FULL,
+};
+
 typedef struct {
     /*
      * The apple 2 hardware used an MOS-6502 processor.
@@ -37,6 +46,14 @@ typedef struct {
      */
     int video_mode;
 
+    /*
+     * This is the color mode we want to emulate. You can have a few
+     * different styles of monochromatic displays: green, amber, and
+     * light gray on black; you can also emulate a full color display,
+     * in which text mode tends to look like light gray.
+     */
+    int color_mode;
+
     /*
      * Our two disk drives.
      */
diff --git a/src/apple2.c b/src/apple2.c
index 2289b5f..d99cb54 100644
--- a/src/apple2.c
+++ b/src/apple2.c
@@ -58,12 +58,24 @@ apple2_create(int width, int height)
         return NULL;
     }
 
+    // Default to full color
+    apple2_set_color(mach, COLOR_FULL);
+
     // We default to lo-res mode.
     apple2_set_video(mach, VIDEO_LORES);
 
     return mach;
 }
 
+void
+apple2_set_color(apple2 *mach, int mode)
+{
+    mach->color_mode = mode;
+    
+    // FIXME: doing this should force us to redraw everything in the
+    // correct color interpretation
+}
+
 void
 apple2_run_loop(apple2 *mach)
 {