diff --git a/app/App.js b/app/App.js
index 3462039..8352db2 100644
--- a/app/App.js
+++ b/app/App.js
@@ -8,46 +8,43 @@ import { PSDENOMINATIONS, COLORS, PAINT } from './constants';
 
 export default class App {
   constructor() {
+    this.blockRefs = [];
+    this.mempoolRefs = [];
+    this.blockList = document.getElementById('blockList');
+    this.connectionStatus = document.getElementById('connectionStatus');
+    this.hero = document.getElementById('hero');
+    this.blockColors = ['000000'];
   }
 
   async init() {
-    this.domRefList = [];
-    this.blockList = document.getElementById('blockList');
-    this.blockList.style.setProperty('--private-color', COLORS.private);
-    this.blockList.style.setProperty('--instant-color', COLORS.instant);
-    this.connectionStatus = document.getElementById('connectionStatus')
-    this.currentBlock = document.createElement('div');
-    this.currentBlock.className = 'block';
-    this.blockList.appendChild(this.currentBlock);
-    this.blockColors = ['000000'];
-
     const block = (new URL(window.location)).searchParams.get('block');
 
     if (block != null) { // display one block
-      this.currentBlock.classList.add('solo');
+      this.hero.classList.add('solo');
       this.connectionStatus.className = 'is-loading';
       var txs = [];
       var pages = 1;
       var prevHash = null;
+      const txListener = this.onTransactionBuilder(this.hero, false);
       for (let i = 0; i < pages; ++i) {
         await fetch(`https://insight.dash.org/insight-api/txs?block=${block}&pageNum=${i}`)
         .then(resp => resp.json())
         .then(thisBlockData => {
-          // console.log({i, pages, prevHash, thisBlockData});
           if (!prevHash && thisBlockData.txs.length > 0) {
             return fetch('https://insight.dash.org/insight-api/block-index/'+(thisBlockData.txs[0].blockheight - 1))
             .then(resp => resp.json())
             .then(prevBlockData => {
               prevHash = prevBlockData.blockHash;
               this.blockColors = App.generateColors(prevHash);
+              this.applyColors(this.hero);
               pages = thisBlockData.pagesTotal;
               for (let j = 0; j < thisBlockData.txs.length; ++j) {
-                this.onTransaction(thisBlockData.txs[j]);
+                txListener(thisBlockData.txs[j]);
               }
             });
           } else {
               for (let j = 0; j < thisBlockData.txs.length; ++j) {
-                this.onTransaction(thisBlockData.txs[j]);
+                txListener(thisBlockData.txs[j]);
               }
           }
         });
@@ -58,6 +55,7 @@ export default class App {
       .then(resp => resp.json())
       .then(data => {
         this.blockColors = App.generateColors(data.lastblockhash);
+        this.applyColors(this.hero);
       });
 
       this.socket = io.connect("https://insight.dash.org:443/");
@@ -66,7 +64,7 @@ export default class App {
         // Join the room.
         this.socket.emit('subscribe', 'inv');
       })
-      this.socket.on('tx', this.onTransaction.bind(this));
+      this.socket.on('tx', this.onTransactionBuilder(this.hero, true).bind(this));
       this.socket.on('block', this.onBlock.bind(this));
       this.socket.on('disconnect', () => {
         this.connectionStatus.className = 'is-disconnected';
@@ -78,48 +76,71 @@ export default class App {
   }
 
   static generateColors(blockHash) {
-    // https://github.com/c0bra/color-scheme-js
-    const schemeTypes = [
-      'contrast',
-      'triade',
-      'triade',
-      'tetrade',
-      'tetrade',
-      'analogic',
-      'analogic',
-      'analogic',
-      'analogic',
-    ];
     const hue = Math.floor(
       parseInt(blockHash.slice(-3), 16) / 4096 * 360
     );
-    const schemeFraction = parseInt(blockHash.slice(-5, -3), 16) / 256;
-    const scheme = schemeTypes[Math.floor(schemeFraction * schemeTypes.length)];
     var blockColorScheme = new ColorScheme();
-    blockColorScheme.from_hue(hue).scheme(scheme).add_complement(true);
+    blockColorScheme.from_hue(hue).scheme('analogic').add_complement(true);
     const colors = blockColorScheme.colors();
-    console.log('New color scheme: ' + scheme + ' based on %chue ' + hue, 'background-color:#'+colors[0]);
     return colors;
   }
 
+  applyColors(target) {
+    for (var i in this.blockColors) {
+      const color = this.blockColors[i];
+      target.style.setProperty(`--color-${i}`, '#'+color);
+    }
+  }
+
   onBlock(data) {
+    var completedBlock = document.createElement('div');
+    completedBlock.className = 'block';
+    completedBlock.id = data;
+    this.applyColors(completedBlock);
     this.blockColors = App.generateColors(data);
+    this.applyColors(this.hero);
     var blockLink = document.createElement('a');
     blockLink.className = 'explorer-link';
     blockLink.href = document.location + '?block=' + data;
     blockLink.target = '_blank';
     blockLink.setAttribute('rel', 'noopener');
     blockLink.appendChild(document.createTextNode('🗗'));
-    this.currentBlock.appendChild(blockLink);
 
-    this.currentBlock = document.createElement('div');
-    this.currentBlock.className = 'block';
-
-    if (this.domRefList.unshift(this.currentBlock) > 16) {
-      var toDelete = this.domRefList.pop();
-      toDelete.remove();
-    }
-    this.blockList.insertBefore(this.currentBlock, this.blockList.firstChild);
+    fetch('https://insight.dash.org/insight-api/block/' + data)
+    .then(resp => resp.json())
+    .then(data => {
+      let mined = [];
+      for (var i in data.tx) {
+        const txid = data.tx[i];
+        let paint = document.getElementById(txid);
+        if (paint) {
+          mined.push(paint);
+          completedBlock.insertBefore(paint, completedBlock.firstChild);
+        }
+      }
+      this.mempoolRefs = this.mempoolRefs.filter(item => !mined.includes(item));
+      this.mempoolRefs.forEach(item => {
+        item.classList.add('stale');
+        item.data_ignored = item.data_ignored ? item.data_ignored + 1 : 1;
+      });
+      this.mempoolRefs.filter(item => {
+        if (item.data_ignored > 4) {
+          try {
+            this.hero.removeChild(item);
+          } catch (err) { }
+          return false;
+        }
+        return true;
+      });
+      completedBlock.appendChild(blockLink);
+      if (this.blockRefs.unshift(this.completedBlock) > 8) {
+        let toDelete = this.blockRefs.pop();
+        if (toDelete) {
+          toDelete.remove();
+        }
+      }
+      this.blockList.insertBefore(completedBlock, this.blockList.firstChild);
+    });
   }
 
   static isPrivateSend(components) {
@@ -132,36 +153,45 @@ export default class App {
     });
   }
 
-  onTransaction(data) {
-    const isMixing = App.isPrivateSend(data.vout);
-    const isInstant = data.txlock || (data.vin && data.vin.length <= 4);
-    const tx = {
-      mixing: isMixing,
-      instant: isInstant,
-      value: data.valueOut,
-      x: parseInt(data.txid.slice(0, 4), 16) / 65536,
-      y: parseInt(data.txid.slice(4, 8), 16) / 65536,
-      rotation: parseInt(data.txid.slice(16, 17), 16) / 16,
-      paintIndex: parseInt(data.txid.slice(17, 21), 16) / 65536,
-      color: isMixing ? COLORS.private : isInstant ? COLORS.instant : this.blockColors[
-        Math.floor(parseInt(data.txid.slice(21, 23), 16) / 256 * this.blockColors.length)
-      ]
-    };
+  onTransactionBuilder(target, addToMempool = false) {
+    return (data) => {
+      const isMixing = App.isPrivateSend(data.vout);
+      const isInstant = data.txlock || (data.vin && data.vin.length <= 4);
+      const isSimple = data.txlock || (data.vin && data.vin.length <= 1);
+      const tx = {
+        id: data.txid,
+        mixing: isMixing,
+        instant: isInstant,
+        simple: isSimple,
+        value: data.valueOut,
+        x: parseInt(data.txid.slice(0, 4), 16) / 65536,
+        y: parseInt(data.txid.slice(4, 8), 16) / 65536,
+        rotation: parseInt(data.txid.slice(16, 17), 16) / 16,
+        paintIndex: parseInt(data.txid.slice(17, 21), 16) / 65536,
+        color: isMixing ? COLORS.black : !isSimple ? COLORS.white : 
+          'var(--color-'+
+          Math.floor(parseInt(data.txid.slice(21, 23), 16) / 256 * this.blockColors.length)+
+          ')'
+      };
 
-    console.log('tx: '+tx.value+(tx.mixing?' mixing':'')+(tx.instant?' instant':''));
-
-    var paint = document.createElement('div');
-    paint.classList.add('paint');
-    paint.style.maskImage = 'url(assets/paint/' + (tx.value > 10 ?
-      PAINT.big[Math.floor(tx.paintIndex * 12)] :
-      PAINT.small[Math.floor(tx.paintIndex * 11)]
-    ) + ')';
-    paint.style.setProperty('-webkit-mask-image', paint.style.maskImage);
-    paint.style.setProperty('--x', tx.x);
-    paint.style.setProperty('--y', tx.y);
-    paint.style.setProperty('--size', Math.log(1 + tx.value)/Math.log(2));
-    paint.style.setProperty('--rotation', tx.rotation * 360 + 'deg');
-    paint.style.setProperty('--color', '#'+tx.color);
-    this.currentBlock.appendChild(paint, this.currentBlock.firstChild);
+      var paint = document.createElement('div');
+      paint.id = tx.id;
+      paint.classList.add('paint');
+      paint.style.maskImage = 'url(assets/paint/' + (tx.value > 10 ?
+        PAINT.big[Math.floor(tx.paintIndex * 12)] :
+        PAINT.small[Math.floor(tx.paintIndex * 11)]
+      ) + ')';
+      paint.style.setProperty('-webkit-mask-image', paint.style.maskImage);
+      paint.style.setProperty('--x', tx.x);
+      paint.style.setProperty('--y', tx.y);
+      paint.style.setProperty('--size', Math.log(1 + tx.value)/Math.log(2));
+      paint.style.setProperty('--rotation', tx.rotation * 360 + 'deg');
+      paint.style.setProperty('--color', tx.color);
+      if (addToMempool && this.mempoolRefs.unshift(paint) > 200) {
+        let toDelete = this.mempoolRefs.pop();
+        toDelete.remove();
+      }
+      target.appendChild(paint);
+    }
   }
 };
diff --git a/app/assets/index.html b/app/assets/index.html
index 8ea8d7b..6da6c95 100644
--- a/app/assets/index.html
+++ b/app/assets/index.html
@@ -8,6 +8,7 @@
   <body>
     <div id="connectionStatus" class="is-connecting"></div>
 
+    <div id="hero"></div>
     <div id="blockList"></div>
 
     <script src="bundle.js"></script>
diff --git a/app/constants.js b/app/constants.js
index 1cca557..e2c0886 100644
--- a/app/constants.js
+++ b/app/constants.js
@@ -7,8 +7,8 @@ export const PSDENOMINATIONS = [
 ];
 
 export const COLORS = {
-    private: '000000',
-    instant: 'ffffff'
+    black: '#000000',
+    white: '#ffffff'
 };
 
 export const PAINT = {
diff --git a/app/styles/main.css b/app/styles/main.css
index de5fba0..f847e77 100644
--- a/app/styles/main.css
+++ b/app/styles/main.css
@@ -34,7 +34,17 @@ a {
   margin-left: 80vw;
   padding-top: 2.5vw;
 }
-.block:first-child {
+#hero, .block {
+  width: 15vw;
+  height: 15vw;
+  -webkit-box-shadow: 0.1em 0.1em 1em hsla(0, 0%, 0%, 0.5);
+          box-shadow: 0.1em 0.1em 1em hsla(0, 0%, 0%, 0.5);
+  background-color: #dad7b7;
+  margin: 0 auto 1em;
+  position: relative;
+  overflow: hidden;
+}
+#hero {
   position: absolute;
   left: 41.125%;
   top: 50%;
@@ -45,26 +55,16 @@ a {
           transform: translate(-50%,-50%);
 }
 @media (max-height: 82.5vw) {
-  .block:first-child {
+  #hero {
     width: calc(100vh - 5vw);
     height: calc(100vh - 5vw);
   }
 }
-.block.solo {
+#hero.solo {
   left: 50%;
   width: 95vmin;
   height: 95vmin;
 }
-.block {
-  width: 15vw;
-  height: 15vw;
-  -webkit-box-shadow: 0.1em 0.1em 1em hsla(0, 0%, 0%, 0.5);
-          box-shadow: 0.1em 0.1em 1em hsla(0, 0%, 0%, 0.5);
-  background-color: #dad7b7;
-  margin: 0 auto 1em;
-  position: relative;
-  overflow: hidden;
-}
 .explorer-link {
   display: none;
   position: absolute;