diff --git a/notes/pics/deep-pagination.png b/notes/pics/deep-pagination.png
index dfc2bf4d..006b8d23 100644
Binary files a/notes/pics/deep-pagination.png and b/notes/pics/deep-pagination.png differ
diff --git a/notes/pics/mysql-2pc.png b/notes/pics/mysql-2pc.png
index f79973af..603724e1 100644
Binary files a/notes/pics/mysql-2pc.png and b/notes/pics/mysql-2pc.png differ
diff --git a/tools/diagram/src/deep-pagination.svg b/tools/diagram/src/deep-pagination.svg
index 7f168274..b272def3 100644
--- a/tools/diagram/src/deep-pagination.svg
+++ b/tools/diagram/src/deep-pagination.svg
@@ -1,31 +1,31 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="720" height="300" viewBox="0 0 720 300">
   <style>
-    text { font-family: "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif; fill: #666; font-size: 12px; }
-    .title { font-weight: bold; font-size: 15px; fill: #777; text-anchor: middle; }
+    text { font-family: "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif; fill: #3F3F3F; font-size: 12px; }
+    .title { font-weight: bold; font-size: 15px; fill: #333; text-anchor: middle; }
     .b { font-weight: bold; }
     .c { text-anchor: middle; }
     .e { text-anchor: end; }
     .note { fill: #C0605A; }
     .ok { fill: #6A9F68; }
-    .sub { font-size: 11px; fill: #888; }
+    .sub { font-size: 11px; fill: #6E6E6E; }
     .mono { font-family: Menlo, Consolas, monospace; }
-    .arrow { stroke: #666; stroke-width: 1.3; fill: none; marker-end: url(#a); }
+    .arrow { stroke: #555; stroke-width: 1.1; fill: none; marker-end: url(#a); }
     .red { stroke: #C0605A; marker-end: url(#r); }
     .green { stroke: #6A9F68; marker-end: url(#g); }
     .dash { stroke-dasharray: 5 4; }
-    .line { stroke: #666; stroke-width: 1.3; fill: none; }
+    .line { stroke: #555; stroke-width: 1.1; fill: none; }
     .frame { fill: none; stroke: #999; stroke-width: 1; stroke-dasharray: 4 3; }
     .shadow { fill: #DADADA; }
   </style>
   <defs>
     <marker id="a" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#666" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#555"/>
     </marker>
     <marker id="r" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#C0605A" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#C0605A"/>
     </marker>
     <marker id="g" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#6A9F68" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#6A9F68"/>
     </marker>
   </defs>
   <rect width="100%" height="100%" fill="#FFFFFF"/>
@@ -33,16 +33,16 @@
   <text x="360" y="28" class="title">深分页为什么慢</text>
   <text x="20" y="62" class="b">LIMIT 1000000, 10：从头数过 1000000 条，丢弃后再取 10 条</text>
   <rect x="20" y="76" width="600" height="26" rx="4" fill="#F2F2F2" stroke="#DDD"/>
-  <rect x="20" y="76" width="560" height="26" rx="4" fill="#E6E6E6"/>
+  <rect x="20" y="76" width="560" height="26" rx="4" fill="#EAE9E7" stroke="#BFBEBA"/>
   <text x="300" y="93" class="c sub">读取后丢弃 1000000 条</text>
-  <rect x="580" y="76" width="12" height="26" fill="#9188D8"/>
+  <rect x="580" y="76" width="12" height="26" fill="#9F94D5"/>
   <line x1="26" y1="116" x2="574" y2="116" class="arrow "/>
   <text x="630" y="93" class="sub">返回 10 条</text>
   <text x="20" y="160" class="b">游标分页：从上一页最后一条之后开始，直接定位</text>
   <path d="M50,210 C220,170 490,170 582,214" class="arrow"/>
   <text x="310" y="178" class="c sub">沿 B+ 树从根节点向下查找，只读几个节点</text>
   <rect x="20" y="216" width="600" height="26" rx="4" fill="#F2F2F2" stroke="#DDD"/>
-  <rect x="580" y="216" width="12" height="26" fill="#9188D8"/>
+  <rect x="580" y="216" width="12" height="26" fill="#9F94D5"/>
   <text x="630" y="233" class="sub">返回 10 条</text>
   <text x="20" y="284" class="sub">200 万行的表上实测：LIMIT 1000000, 10 耗时 1321 ms，游标分页 0.13 ms，并且与翻到第几页无关。</text>
 </svg>
diff --git a/tools/diagram/src/mysql-2pc.svg b/tools/diagram/src/mysql-2pc.svg
index 92f138ed..ee6973a2 100644
--- a/tools/diagram/src/mysql-2pc.svg
+++ b/tools/diagram/src/mysql-2pc.svg
@@ -1,50 +1,46 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="720" height="300" viewBox="0 0 720 300">
   <style>
-    text { font-family: "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif; fill: #666; font-size: 12px; }
-    .title { font-weight: bold; font-size: 15px; fill: #777; text-anchor: middle; }
+    text { font-family: "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif; fill: #3F3F3F; font-size: 12px; }
+    .title { font-weight: bold; font-size: 15px; fill: #333; text-anchor: middle; }
     .b { font-weight: bold; }
     .c { text-anchor: middle; }
     .e { text-anchor: end; }
     .note { fill: #C0605A; }
     .ok { fill: #6A9F68; }
-    .sub { font-size: 11px; fill: #888; }
+    .sub { font-size: 11px; fill: #6E6E6E; }
     .mono { font-family: Menlo, Consolas, monospace; }
-    .arrow { stroke: #666; stroke-width: 1.3; fill: none; marker-end: url(#a); }
+    .arrow { stroke: #555; stroke-width: 1.1; fill: none; marker-end: url(#a); }
     .red { stroke: #C0605A; marker-end: url(#r); }
     .green { stroke: #6A9F68; marker-end: url(#g); }
     .dash { stroke-dasharray: 5 4; }
-    .line { stroke: #666; stroke-width: 1.3; fill: none; }
+    .line { stroke: #555; stroke-width: 1.1; fill: none; }
     .frame { fill: none; stroke: #999; stroke-width: 1; stroke-dasharray: 4 3; }
     .shadow { fill: #DADADA; }
   </style>
   <defs>
     <marker id="a" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#666" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#555"/>
     </marker>
     <marker id="r" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#C0605A" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#C0605A"/>
     </marker>
     <marker id="g" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
-      <path d="M1,1 L9,5 L1,9" fill="none" stroke="#6A9F68" stroke-width="1.6"/>
+      <path d="M1,1.5 L9.5,5 L1,8.5 z" fill="#6A9F68"/>
     </marker>
   </defs>
   <rect width="100%" height="100%" fill="#FFFFFF"/>
 
   <text x="360" y="28" class="title">两阶段提交与崩溃恢复</text>
-  <rect x="10" y="64" width="124" height="60" rx="6" class="shadow"/>
-  <rect x="8" y="62" width="124" height="60" rx="6" fill="#E6E6E6"/>
+  <rect x="8" y="62" width="124" height="60" rx="6" fill="#EAE9E7" stroke="#BFBEBA"/>
   <text x="70" y="90" class="b c">开始事务</text>
   <text x="70" y="105" class="sub c">修改内存中的页</text>
-  <rect x="160" y="64" width="124" height="60" rx="6" class="shadow"/>
-  <rect x="158" y="62" width="124" height="60" rx="6" fill="#B1DDF0"/>
+  <rect x="158" y="62" width="124" height="60" rx="6" fill="#C6E4FB" stroke="#7FB2D6"/>
   <text x="220" y="90" class="b c">① prepare</text>
   <text x="220" y="105" class="sub c">写 redo log 并刷盘</text>
-  <rect x="340" y="64" width="124" height="60" rx="6" class="shadow"/>
-  <rect x="338" y="62" width="124" height="60" rx="6" fill="#B0E3E6"/>
+  <rect x="338" y="62" width="124" height="60" rx="6" fill="#C6ECE9" stroke="#7DBCB7"/>
   <text x="400" y="90" class="b c">② 写 binlog</text>
   <text x="400" y="105" class="sub c">含 Xid，刷盘</text>
-  <rect x="520" y="64" width="124" height="60" rx="6" class="shadow"/>
-  <rect x="518" y="62" width="124" height="60" rx="6" fill="#DDD7F6"/>
+  <rect x="518" y="62" width="124" height="60" rx="6" fill="#E6E3FA" stroke="#B8B0DE"/>
   <text x="580" y="90" class="b c">③ commit</text>
   <text x="580" y="105" class="sub c">redo log 标记提交</text>
   <line x1="134" y1="92" x2="154" y2="92" class="arrow "/>