diff --git a/client/src/models/TxBlockScene.js b/client/src/models/TxBlockScene.js
index 327c7fa..f7fd498 100644
--- a/client/src/models/TxBlockScene.js
+++ b/client/src/models/TxBlockScene.js
@@ -125,7 +125,7 @@ export default class TxBlockScene extends TxMondrianPoolScene {
         state: 'ready'
       })
     } else {
-      const jitter = (Math.random() * 1700)
+      const jitter = (Math.random() * 1200)
       tx.view.update({
         display: {
           position: {
@@ -140,10 +140,7 @@ export default class TxBlockScene extends TxMondrianPoolScene {
       })
       tx.view.update({
         display: {
-          color: settingsValue.darkMode && false ? {
-            h: 0.8,
-            l: 1.0
-          } : orange,
+          color: ice(tx.colors[this.colorMode].block.color),
         },
         start: now,
         delay: 50 + jitter,
@@ -363,3 +360,10 @@ export default class TxBlockScene extends TxMondrianPoolScene {
     } else return null
   }
 }
+
+function ice (color) {
+  return {
+    h: Math.abs(color.h - 0.58) < 0.1 ? (color.h < 0.58 ? 0.48 : 0.68) : color.h,
+    l: color.h < 0.76 ? 1 : 0.7
+  }
+}
diff --git a/server/README.md b/server/README.md
index ab9751d..365bde4 100644
--- a/server/README.md
+++ b/server/README.md
@@ -51,6 +51,7 @@ The API server expects the following environment variables to be set:
 | LOG_LEVEL | Tailor logging verbosity. either "error", "info" (default) or "debug" |
 | RPC_POOLS | Number of connection pools for RPC requests to Bitcoin Core |
 | RPC_POOL_SIZE | Number of connections maintained per pool (RPC_POOLS x RPC_POOL_SIZE should be substantially lower than `rpcworkqueue` in bitcoin.conf) |
+| TARGET | build target "public" or "personal" |
 | BITCOIN_HOST | Bitcoin node host address |
 | BITCOIN_ZMQ_RAWBLOCK_PORT | Bitcoin node ZMQ port for block events (to match `zmqpubrawblock` in bitcoin.conf) |
 | BITCOIN_ZMQ_RAWTX_PORT | Bitcoin node ZMQ port for transaction events (to match `zmqpubrawtx` in bitcoin.conf) |