diff --git a/build/dat.gui.js b/build/dat.gui.js
index 78c5363..b321b51 100644
--- a/build/dat.gui.js
+++ b/build/dat.gui.js
@@ -704,7 +704,7 @@ dat.controllers.NumberController = (function (Controller, common) {
         this.__impliedStep = 1; // What are we, psychics?
       } else {
         // Hey Doug, check this out.
-        this.__impliedStep = Math.pow(10, Math.floor(Math.log(this.initialValue)/Math.LN10))/10;
+        this.__impliedStep = Math.pow(10, Math.floor(Math.log(Math.abs(this.initialValue))/Math.LN10))/10;
       }
 
     } else {
@@ -3556,7 +3556,8 @@ dat.utils.requestAnimationFrame = (function () {
    * http://paulirish.com/2011/requestanimationframe-for-smart-animating/
    */
 
-  return window.webkitRequestAnimationFrame ||
+  return window.requestAnimationFrame ||
+      window.webkitRequestAnimationFrame ||
       window.mozRequestAnimationFrame ||
       window.oRequestAnimationFrame ||
       window.msRequestAnimationFrame ||
diff --git a/build/dat.gui.min.js b/build/dat.gui.min.js
index 23fd518..8ea141a 100644
--- a/build/dat.gui.min.js
+++ b/build/dat.gui.min.js
@@ -24,8 +24,8 @@ f&&(d.splice(f,1),a.className=d.join(" "))}}else a.className=void 0;return c},ha
 {left:0,top:0};if(a.offsetParent){do c.left+=a.offsetLeft,c.top+=a.offsetTop;while(a=a.offsetParent)}return c},isActive:function(a){return a===document.activeElement&&(a.type||a.href)}};return c}(dat.utils.common);
 dat.controllers.OptionController=function(f,a,d){var e=function(c,b,f){e.superclass.call(this,c,b);var q=this;this.__select=document.createElement("select");if(d.isArray(f)){var l={};d.each(f,function(a){l[a]=a});f=l}d.each(f,function(a,b){var c=document.createElement("option");c.innerHTML=b;c.setAttribute("value",a);q.__select.appendChild(c)});this.updateDisplay();a.bind(this.__select,"change",function(){q.setValue(this.options[this.selectedIndex].value)});this.domElement.appendChild(this.__select)};
 e.superclass=f;d.extend(e.prototype,f.prototype,{setValue:function(a){a=e.superclass.prototype.setValue.call(this,a);this.__onFinishChange&&this.__onFinishChange.call(this,this.getValue());return a},updateDisplay:function(){this.__select.value=this.getValue();return e.superclass.prototype.updateDisplay.call(this)}});return e}(dat.controllers.Controller,dat.dom.dom,dat.utils.common);
-dat.controllers.NumberController=function(f,a){function d(a){a=a.toString();return-1<a.indexOf(".")?a.length-a.indexOf(".")-1:0}var e=function(c,b,f){e.superclass.call(this,c,b);f=f||{};this.__min=f.min;this.__max=f.max;this.__step=f.step;a.isUndefined(this.__step)?this.__impliedStep=0==this.initialValue?1:Math.pow(10,Math.floor(Math.log(this.initialValue)/Math.LN10))/10:this.__impliedStep=this.__step;this.__precision=d(this.__impliedStep)};e.superclass=f;a.extend(e.prototype,f.prototype,{setValue:function(a){void 0!==
-this.__min&&a<this.__min?a=this.__min:void 0!==this.__max&&a>this.__max&&(a=this.__max);void 0!==this.__step&&0!=a%this.__step&&(a=Math.round(a/this.__step)*this.__step);return e.superclass.prototype.setValue.call(this,a)},min:function(a){this.__min=a;return this},max:function(a){this.__max=a;return this},step:function(a){this.__impliedStep=this.__step=a;this.__precision=d(a);return this}});return e}(dat.controllers.Controller,dat.utils.common);
+dat.controllers.NumberController=function(f,a){function d(a){a=a.toString();return-1<a.indexOf(".")?a.length-a.indexOf(".")-1:0}var e=function(c,b,f){e.superclass.call(this,c,b);f=f||{};this.__min=f.min;this.__max=f.max;this.__step=f.step;a.isUndefined(this.__step)?this.__impliedStep=0==this.initialValue?1:Math.pow(10,Math.floor(Math.log(Math.abs(this.initialValue))/Math.LN10))/10:this.__impliedStep=this.__step;this.__precision=d(this.__impliedStep)};e.superclass=f;a.extend(e.prototype,f.prototype,
+{setValue:function(a){void 0!==this.__min&&a<this.__min?a=this.__min:void 0!==this.__max&&a>this.__max&&(a=this.__max);void 0!==this.__step&&0!=a%this.__step&&(a=Math.round(a/this.__step)*this.__step);return e.superclass.prototype.setValue.call(this,a)},min:function(a){this.__min=a;return this},max:function(a){this.__max=a;return this},step:function(a){this.__impliedStep=this.__step=a;this.__precision=d(a);return this}});return e}(dat.controllers.Controller,dat.utils.common);
 dat.controllers.NumberControllerBox=function(f,a,d){var e=function(c,b,f){function q(){var a=parseFloat(n.__input.value);d.isNaN(a)||n.setValue(a)}function l(a){var b=u-a.clientY;n.setValue(n.getValue()+b*n.__impliedStep);u=a.clientY}function r(){a.unbind(window,"mousemove",l);a.unbind(window,"mouseup",r)}this.__truncationSuspended=!1;e.superclass.call(this,c,b,f);var n=this,u;this.__input=document.createElement("input");this.__input.setAttribute("type","text");a.bind(this.__input,"change",q);a.bind(this.__input,
 "blur",function(){q();n.__onFinishChange&&n.__onFinishChange.call(n,n.getValue())});a.bind(this.__input,"mousedown",function(b){a.bind(window,"mousemove",l);a.bind(window,"mouseup",r);u=b.clientY});a.bind(this.__input,"keydown",function(a){13===a.keyCode&&(n.__truncationSuspended=!0,this.blur(),n.__truncationSuspended=!1)});this.updateDisplay();this.domElement.appendChild(this.__input)};e.superclass=f;d.extend(e.prototype,f.prototype,{updateDisplay:function(){var a=this.__input,b;if(this.__truncationSuspended)b=
 this.getValue();else{b=this.getValue();var d=Math.pow(10,this.__precision);b=Math.round(b*d)/d}a.value=b;return e.superclass.prototype.updateDisplay.call(this)}});return e}(dat.controllers.NumberController,dat.dom.dom,dat.utils.common);
@@ -87,7 +87,7 @@ b,c){Object.defineProperty(a,b,{get:function(){if("RGB"===this.__state.space)ret
 b.__state.space)b.__state[c]=a.component_from_hex(b.__state.hex,d);else if("HSV"===b.__state.space)e.extend(b.__state,a.hsv_to_rgb(b.__state.h,b.__state.s,b.__state.v));else throw"Corrupted color state";}function q(b){var c=a.rgb_to_hsv(b.r,b.g,b.b);e.extend(b.__state,{s:c.s,v:c.v});e.isNaN(c.h)?e.isUndefined(b.__state.h)&&(b.__state.h=0):b.__state.h=c.h}var l=function(){this.__state=f.apply(this,arguments);if(!1===this.__state)throw"Failed to interpret color arguments";this.__state.a=this.__state.a||
 1};l.COMPONENTS="r g b h s v hex a".split(" ");e.extend(l.prototype,{toString:function(){return d(this)},toOriginal:function(){return this.__state.conversion.write(this)}});c(l.prototype,"r",2);c(l.prototype,"g",1);c(l.prototype,"b",0);b(l.prototype,"h");b(l.prototype,"s");b(l.prototype,"v");Object.defineProperty(l.prototype,"a",{get:function(){return this.__state.a},set:function(a){this.__state.a=a}});Object.defineProperty(l.prototype,"hex",{get:function(){"HEX"!==!this.__state.space&&(this.__state.hex=
 a.rgb_to_hex(this.r,this.g,this.b));return this.__state.hex},set:function(a){this.__state.space="HEX";this.__state.hex=a}});return l}(dat.color.interpret,dat.color.math=function(){var f;return{hsv_to_rgb:function(a,d,e){var c=a/60-Math.floor(a/60),b=e*(1-d),f=e*(1-c*d);d=e*(1-(1-c)*d);a=[[e,d,b],[f,e,b],[b,e,d],[b,f,e],[d,b,e],[e,b,f]][Math.floor(a/60)%6];return{r:255*a[0],g:255*a[1],b:255*a[2]}},rgb_to_hsv:function(a,d,e){var c=Math.min(a,d,e),b=Math.max(a,d,e),c=b-c;if(0==b)return{h:NaN,s:0,v:0};
-a=(a==b?(d-e)/c:d==b?2+(e-a)/c:4+(a-d)/c)/6;0>a&&(a+=1);return{h:360*a,s:c/b,v:b/255}},rgb_to_hex:function(a,d,e){a=this.hex_with_component(0,2,a);a=this.hex_with_component(a,1,d);return a=this.hex_with_component(a,0,e)},component_from_hex:function(a,d){return a>>8*d&255},hex_with_component:function(a,d,e){return e<<(f=8*d)|a&~(255<<f)}}}(),dat.color.toString,dat.utils.common),dat.color.interpret,dat.utils.common),dat.utils.requestAnimationFrame=function(){return window.webkitRequestAnimationFrame||
+a=(a==b?(d-e)/c:d==b?2+(e-a)/c:4+(a-d)/c)/6;0>a&&(a+=1);return{h:360*a,s:c/b,v:b/255}},rgb_to_hex:function(a,d,e){a=this.hex_with_component(0,2,a);a=this.hex_with_component(a,1,d);return a=this.hex_with_component(a,0,e)},component_from_hex:function(a,d){return a>>8*d&255},hex_with_component:function(a,d,e){return e<<(f=8*d)|a&~(255<<f)}}}(),dat.color.toString,dat.utils.common),dat.color.interpret,dat.utils.common),dat.utils.requestAnimationFrame=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||
 window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(f,a){window.setTimeout(f,1E3/60)}}(),dat.dom.CenteredDiv=function(f,a){var d=function(){this.backgroundElement=document.createElement("div");a.extend(this.backgroundElement.style,{backgroundColor:"rgba(0,0,0,0.8)",top:0,left:0,display:"none",zIndex:"1000",opacity:0,WebkitTransition:"opacity 0.2s linear",transition:"opacity 0.2s linear"});f.makeFullscreen(this.backgroundElement);this.backgroundElement.style.position=
 "fixed";this.domElement=document.createElement("div");a.extend(this.domElement.style,{position:"fixed",display:"none",zIndex:"1001",opacity:0,WebkitTransition:"-webkit-transform 0.2s ease-out, opacity 0.2s linear",transition:"transform 0.2s ease-out, opacity 0.2s linear"});document.body.appendChild(this.backgroundElement);document.body.appendChild(this.domElement);var d=this;f.bind(this.backgroundElement,"click",function(){d.hide()})};d.prototype.show=function(){var d=this;this.backgroundElement.style.display=
 "block";this.domElement.style.display="block";this.domElement.style.opacity=0;this.domElement.style.webkitTransform="scale(1.1)";this.layout();a.defer(function(){d.backgroundElement.style.opacity=1;d.domElement.style.opacity=1;d.domElement.style.webkitTransform="scale(1)"})};d.prototype.hide=function(){var a=this,c=function(){a.domElement.style.display="none";a.backgroundElement.style.display="none";f.unbind(a.domElement,"webkitTransitionEnd",c);f.unbind(a.domElement,"transitionend",c);f.unbind(a.domElement,