diff --git a/mods/onecolor.js b/mods/onecolor.js
new file mode 100644
index 00000000..f2eb1b50
--- /dev/null
+++ b/mods/onecolor.js
@@ -0,0 +1,44 @@
+function pixelColorPick(pixel,customColor=null) {
+    var element = pixel.element;
+    var elementInfo = elements[element];
+    //if (elementInfo.behavior instanceof Array) {
+    
+    if (pixel.charge && elementInfo.colorOn) {
+        customColor = elementInfo.colorOn;
+    }
+    if (customColor != null) {
+        if (Array.isArray(customColor)) {
+            customColor = customColor[0];
+        }
+        if (customColor.startsWith("#")) {
+            customColor = hexToRGB(customColor);
+        }
+        var rgb = customColor;
+    }
+    else {
+        var rgb = elements[element].colorObject; // {r, g, b}
+        // If rgb is an array, choose a random item
+        if (Array.isArray(rgb)) {
+            rgb = rgb[0];
+        }
+    }
+    // Randomly darken or lighten the RGB color
+    var coloroffset = Math.floor(Math.random() * (Math.random() > 0.5 ? -1 : 1) * Math.random() * 15);
+    var r = rgb.r + coloroffset;
+    var g = rgb.g + coloroffset;
+    var b = rgb.b + coloroffset;
+    // Make sure the color is within the RGB range
+    r = Math.max(0, Math.min(255, r));
+    g = Math.max(0, Math.min(255, g));
+    b = Math.max(0, Math.min(255, b));
+    var color = "rgb("+r+","+g+","+b+")";
+    
+    /*}
+    else {
+        var color = elementInfo.color;
+        if (Array.isArray(color)) {
+            color = color[Math.floor(Math.random() * color.length)];
+        }
+    }*/
+    return color;
+}
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