diff --git a/packages/material-ui-icons/builder.js b/packages/material-ui-icons/builder.js
index 22ad01c8230ca6..61614a35b49956 100755
--- a/packages/material-ui-icons/builder.js
+++ b/packages/material-ui-icons/builder.js
@@ -110,8 +110,11 @@ async function worker({ svgPath, options, renameFilter, template }) {
   }
 
   const data = await fse.readFile(svgPath, { encoding: 'utf8' });
-  const result = await svgo.optimize(data);
 
+  // Remove hardcoded color fill before optimizing so that empty groups are removed
+  const input = data.replace(/ fill="#010101"/g, '');
+
+  const result = await svgo.optimize(input);
   // Extract the paths from the svg string
   // Clean xml paths
   const paths = result.data
@@ -122,7 +125,6 @@ async function worker({ svgPath, options, renameFilter, template }) {
     .replace(/xlink:href="#a"/g, '')
     .replace(/xlink:href="#c"/g, '')
     .replace(/xlink:href="#SVGID_[\d]*_"/g, '')
-    .replace(/fill="#010101" /g, '')
     .replace(/fill-opacity=/g, 'fillOpacity=')
     .replace(/<path[^>]*0h24[^>]*>/g, '')
     .replace(/<path[^>]*0H24[^>]*>/g, '')
diff --git a/packages/material-ui-icons/src/AllOut.js b/packages/material-ui-icons/src/AllOut.js
index aa63372cf11747..856b16a53ac3e4 100644
--- a/packages/material-ui-icons/src/AllOut.js
+++ b/packages/material-ui-icons/src/AllOut.js
@@ -2,5 +2,5 @@ import React from 'react';
 import createSvgIcon from './utils/createSvgIcon';
 
 export default createSvgIcon(
-  <React.Fragment><path fill="#010101" d="M16.21 4.16l4 4v-4zm4 12l-4 4h4zm-12 4l-4-4v4zm-4-12l4-4h-4zm12.95-.95c-2.73-2.73-7.17-2.73-9.9 0s-2.73 7.17 0 9.9 7.17 2.73 9.9 0 2.73-7.16 0-9.9zm-1.1 8.8c-2.13 2.13-5.57 2.13-7.7 0s-2.13-5.57 0-7.7 5.57-2.13 7.7 0 2.13 5.57 0 7.7z" /><path fill="none" d="M.21.16h24v24h-24z" /></React.Fragment>
+  <React.Fragment><path d="M16.21 4.16l4 4v-4zm4 12l-4 4h4zm-12 4l-4-4v4zm-4-12l4-4h-4zm12.95-.95c-2.73-2.73-7.17-2.73-9.9 0s-2.73 7.17 0 9.9 7.17 2.73 9.9 0 2.73-7.16 0-9.9zm-1.1 8.8c-2.13 2.13-5.57 2.13-7.7 0s-2.13-5.57 0-7.7 5.57-2.13 7.7 0 2.13 5.57 0 7.7z" /><path fill="none" d="M.21.16h24v24h-24z" /></React.Fragment>
 , 'AllOut');
diff --git a/packages/material-ui-icons/src/FiberManualRecord.js b/packages/material-ui-icons/src/FiberManualRecord.js
index 8618fa3e123266..df655b0fccf91b 100644
--- a/packages/material-ui-icons/src/FiberManualRecord.js
+++ b/packages/material-ui-icons/src/FiberManualRecord.js
@@ -2,5 +2,5 @@ import React from 'react';
 import createSvgIcon from './utils/createSvgIcon';
 
 export default createSvgIcon(
-  <React.Fragment><circle cx="12" cy="12" r="8" fill="#010101" /></React.Fragment>
+  <React.Fragment><circle cx="12" cy="12" r="8" /></React.Fragment>
 , 'FiberManualRecord');
diff --git a/packages/material-ui-icons/src/FiberSmartRecord.js b/packages/material-ui-icons/src/FiberSmartRecord.js
index ccc1fb57a8bee7..07b3208912758d 100644
--- a/packages/material-ui-icons/src/FiberSmartRecord.js
+++ b/packages/material-ui-icons/src/FiberSmartRecord.js
@@ -2,5 +2,5 @@ import React from 'react';
 import createSvgIcon from './utils/createSvgIcon';
 
 export default createSvgIcon(
-  <React.Fragment><g fill="#010101"><circle cx="9" cy="12" r="8" /><path d="M17 4.26v2.09a5.99 5.99 0 0 1 0 11.3v2.09c3.45-.89 6-4.01 6-7.74s-2.55-6.85-6-7.74z" /></g></React.Fragment>
+  <React.Fragment><circle cx="9" cy="12" r="8" /><path d="M17 4.26v2.09a5.99 5.99 0 0 1 0 11.3v2.09c3.45-.89 6-4.01 6-7.74s-2.55-6.85-6-7.74z" /></React.Fragment>
 , 'FiberSmartRecord');
diff --git a/packages/material-ui-icons/src/ScatterPlot.js b/packages/material-ui-icons/src/ScatterPlot.js
index 09ce66d0b7880d..6b74ead97e3f68 100644
--- a/packages/material-ui-icons/src/ScatterPlot.js
+++ b/packages/material-ui-icons/src/ScatterPlot.js
@@ -2,5 +2,5 @@ import React from 'react';
 import createSvgIcon from './utils/createSvgIcon';
 
 export default createSvgIcon(
-  <React.Fragment><g fill="#010101"><circle cx="7" cy="14" r="3" /><circle cx="11" cy="6" r="3" /><circle cx="16.6" cy="17.6" r="3" /></g></React.Fragment>
+  <React.Fragment><circle cx="7" cy="14" r="3" /><circle cx="11" cy="6" r="3" /><circle cx="16.6" cy="17.6" r="3" /></React.Fragment>
 , 'ScatterPlot');
diff --git a/packages/material-ui-icons/src/StrikethroughS.js b/packages/material-ui-icons/src/StrikethroughS.js
index 98f3e54436f86c..484b89f645888f 100644
--- a/packages/material-ui-icons/src/StrikethroughS.js
+++ b/packages/material-ui-icons/src/StrikethroughS.js
@@ -2,5 +2,5 @@ import React from 'react';
 import createSvgIcon from './utils/createSvgIcon';
 
 export default createSvgIcon(
-  <React.Fragment><clipPath id="b"><use overflow="visible" /></clipPath><path fill="#010101" d="M7.24 8.75c-.26-.48-.39-1.03-.39-1.67 0-.61.13-1.16.4-1.67.26-.5.63-.93 1.11-1.29a5.73 5.73 0 0 1 1.7-.83c.66-.19 1.39-.29 2.18-.29.81 0 1.54.11 2.21.34.66.22 1.23.54 1.69.94.47.4.83.88 1.08 1.43.25.55.38 1.15.38 1.81h-3.01c0-.31-.05-.59-.15-.85-.09-.27-.24-.49-.44-.68-.2-.19-.45-.33-.75-.44-.3-.1-.66-.16-1.06-.16-.39 0-.74.04-1.03.13-.29.09-.53.21-.72.36-.19.16-.34.34-.44.55-.1.21-.15.43-.15.66 0 .48.25.88.74 1.21.38.25.77.48 1.41.7H7.39c-.05-.08-.11-.17-.15-.25zM21 12v-2H3v2h9.62c.18.07.4.14.55.2.37.17.66.34.87.51.21.17.35.36.43.57.07.2.11.43.11.69 0 .23-.05.45-.14.66-.09.2-.23.38-.42.53-.19.15-.42.26-.71.35-.29.08-.63.13-1.01.13-.43 0-.83-.04-1.18-.13s-.66-.23-.91-.42c-.25-.19-.45-.44-.59-.75-.14-.31-.25-.76-.25-1.21H6.4c0 .55.08 1.13.24 1.58.16.45.37.85.65 1.21.28.35.6.66.98.92.37.26.78.48 1.22.65.44.17.9.3 1.38.39.48.08.96.13 1.44.13.8 0 1.53-.09 2.18-.28s1.21-.45 1.67-.79c.46-.34.82-.77 1.07-1.27s.38-1.07.38-1.71c0-.6-.1-1.14-.31-1.61-.05-.11-.11-.23-.17-.33H21z" clip-path="url(#b)" /></React.Fragment>
+  <React.Fragment><clipPath id="b"><use overflow="visible" /></clipPath><path d="M7.24 8.75c-.26-.48-.39-1.03-.39-1.67 0-.61.13-1.16.4-1.67.26-.5.63-.93 1.11-1.29a5.73 5.73 0 0 1 1.7-.83c.66-.19 1.39-.29 2.18-.29.81 0 1.54.11 2.21.34.66.22 1.23.54 1.69.94.47.4.83.88 1.08 1.43.25.55.38 1.15.38 1.81h-3.01c0-.31-.05-.59-.15-.85-.09-.27-.24-.49-.44-.68-.2-.19-.45-.33-.75-.44-.3-.1-.66-.16-1.06-.16-.39 0-.74.04-1.03.13-.29.09-.53.21-.72.36-.19.16-.34.34-.44.55-.1.21-.15.43-.15.66 0 .48.25.88.74 1.21.38.25.77.48 1.41.7H7.39c-.05-.08-.11-.17-.15-.25zM21 12v-2H3v2h9.62c.18.07.4.14.55.2.37.17.66.34.87.51.21.17.35.36.43.57.07.2.11.43.11.69 0 .23-.05.45-.14.66-.09.2-.23.38-.42.53-.19.15-.42.26-.71.35-.29.08-.63.13-1.01.13-.43 0-.83-.04-1.18-.13s-.66-.23-.91-.42c-.25-.19-.45-.44-.59-.75-.14-.31-.25-.76-.25-1.21H6.4c0 .55.08 1.13.24 1.58.16.45.37.85.65 1.21.28.35.6.66.98.92.37.26.78.48 1.22.65.44.17.9.3 1.38.39.48.08.96.13 1.44.13.8 0 1.53-.09 2.18-.28s1.21-.45 1.67-.79c.46-.34.82-.77 1.07-1.27s.38-1.07.38-1.71c0-.6-.1-1.14-.31-1.61-.05-.11-.11-.23-.17-.33H21z" clip-path="url(#b)" /></React.Fragment>
 , 'StrikethroughS');