diff --git a/Changes.txt b/Changes.txt
index 943d597db..386417fdb 100644
--- a/Changes.txt
+++ b/Changes.txt
@@ -60,6 +60,11 @@
         constants vs. symbolic addresses in the symbol file.  Eventually,
         further information from the lst file may be used.
 
+      - The various graphics registers in the TIA output (GRPx and PFx)
+        now have their background pixels (ie, pixels not actively being
+        drawn) set to COLUBK instead of always being black.  Thanks to
+        Tjoppen of AtariAge for this idea and the actual code.
+
   * Renamed 'Override properties' dialog (accessible from the ROM
     launcher by a right-mouse-button click) to 'Power-on options', with
     the following new options:
diff --git a/src/debugger/gui/TiaWidget.cxx b/src/debugger/gui/TiaWidget.cxx
index e23cd3e40..7a0935d1f 100644
--- a/src/debugger/gui/TiaWidget.cxx
+++ b/src/debugger/gui/TiaWidget.cxx
@@ -856,6 +856,7 @@ void TiaWidget::loadConfig()
   ////////////////////////////
   // grP0
   myGRP0->setColor(state.coluRegs[0]);
+  myGRP0->setBackgroundColor(state.coluRegs[3]);
   myGRP0->setIntState(state.gr[P0], false);
 
   // posP0
@@ -878,6 +879,7 @@ void TiaWidget::loadConfig()
   ////////////////////////////
   // grP1
   myGRP1->setColor(state.coluRegs[1]);
+  myGRP1->setBackgroundColor(state.coluRegs[3]);
   myGRP1->setIntState(state.gr[P1], false);
 
   // posP1
@@ -954,14 +956,17 @@ void TiaWidget::loadConfig()
   ////////////////////////////
   // PF0
   myPF[0]->setColor(state.coluRegs[2]);
+  myPF[0]->setBackgroundColor(state.coluRegs[3]);
   myPF[0]->setIntState(state.pf[0], true);  // reverse bit order
 
   // PF1
   myPF[1]->setColor(state.coluRegs[2]);
+  myPF[1]->setBackgroundColor(state.coluRegs[3]);
   myPF[1]->setIntState(state.pf[1], false);
 
   // PF2
   myPF[2]->setColor(state.coluRegs[2]);
+  myPF[2]->setBackgroundColor(state.coluRegs[3]);
   myPF[2]->setIntState(state.pf[2], true);  // reverse bit order
 
   // Reflect
diff --git a/src/debugger/gui/TogglePixelWidget.cxx b/src/debugger/gui/TogglePixelWidget.cxx
index abab9c4b7..ba868a8db 100644
--- a/src/debugger/gui/TogglePixelWidget.cxx
+++ b/src/debugger/gui/TogglePixelWidget.cxx
@@ -28,7 +28,8 @@
 TogglePixelWidget::TogglePixelWidget(GuiObject* boss, const GUI::Font& font,
                                      int x, int y, int cols, int rows)
   : ToggleWidget(boss, font, x, y, cols, rows),
-    _pixelColor(0)
+    _pixelColor(0),
+    _backgroundColor(kBGColor)
 {
   _rowHeight = _colWidth = font.getLineHeight();
 
@@ -136,7 +137,7 @@ void TogglePixelWidget::drawWidget(bool hilite)
 
       // Either draw the pixel in given color, or erase (show background)
       s.fillRect(x - 3, y - 1, _colWidth-1, _rowHeight-1,
-                 _stateList[pos] ? _pixelColor : kBGColor);
+                 _stateList[pos] ? _pixelColor : _backgroundColor);
     }
   }
 }
diff --git a/src/debugger/gui/TogglePixelWidget.hxx b/src/debugger/gui/TogglePixelWidget.hxx
index 6c8f3b23a..960af92cb 100644
--- a/src/debugger/gui/TogglePixelWidget.hxx
+++ b/src/debugger/gui/TogglePixelWidget.hxx
@@ -31,6 +31,7 @@ class TogglePixelWidget : public ToggleWidget
     virtual ~TogglePixelWidget();
 
     void setColor(int color) { _pixelColor = color; }
+    void setBackgroundColor(int color) { _backgroundColor = color; }
     void setState(const BoolArray& state);
 
     void setIntState(int value, bool swap);
@@ -40,7 +41,7 @@ class TogglePixelWidget : public ToggleWidget
     void drawWidget(bool hilite);
 
   private:
-    int  _pixelColor;
+    int  _pixelColor, _backgroundColor;
     bool _swapBits;
 };