diff --git a/walkers.js b/walkers.js
index c86648a..c3fae31 100644
--- a/walkers.js
+++ b/walkers.js
@@ -5,14 +5,14 @@
 // a rainbow-adjacent set of colors for the walkers to cycle through
 var walker_colors = [
   "#ffb000", // amber, from https://superuser.com/a/1206781
-  "#ff7700", // orange
   "#33ff00", // green, also from https://superuser.com/a/1206781
+  "#ff2e00", // red
+  "#ff7700", // orange
   "#004cff", // blue
   "#8500ff", // purple
-  "#ff2e00", // red
 ];
 // start with a random part of the sequence
-var color_idx = Math.floor(Math.random() * walker_colors.length);
+var color_idx = 0;
 
 // create a new walker with random position and color
 function create_random_walker() {
@@ -85,10 +85,10 @@ Number.prototype.div = function(divisor) {
  * Random walk implementation (movement functions)                          *
  ****************************************************************************/
 
-// return a random update time. 10 to 90ms in increments of 20.
+// return a random update time. 30 to 210ms in increments of 20.
 function random_update_time() {
-  var speed = Math.floor(Math.random() * 5);
-  return (speed * 20) + 10;
+  var speed = Math.floor(Math.random() * 7);
+  return (speed * 30) + 30;
 }
 
 // start up the functions that run FOREVER!!!
@@ -102,7 +102,7 @@ function init_walk() {
   if (urlParams.has('n', "0")) {
     n_create = 0;
   } else {
-    n_create = Number(urlParams.get('n')) || walker_colors.length;
+    n_create = Number(urlParams.get('nwalk')) || 3;
   }
 
   // create initial walkers of every color
@@ -224,7 +224,7 @@ function fix_grid_size() {
 
 // draw on the canvas a grid square of that color
 function draw_grid_square(row, col, color) {
-  var margin = 1;
+  var margin = 4;
   var pos_h = offset_h + (cell_size * col) + margin;
   var pos_v = offset_v + (cell_size * row) + margin;
 
@@ -259,7 +259,7 @@ document
   .addEventListener("click", destroy_all_walkers);
 
 // compute the initial rows and columns
-var cell_size = 8;
+var cell_size = 22;
 var n_rows = canvas.height.div(cell_size);
 var n_cols = canvas.width.div(cell_size);
 var offset_h = (canvas.width - (cell_size * n_cols)).div(2);