diff --git a/notes/pics/spring-aop-proxy.png b/notes/pics/spring-aop-proxy.png
index 59f571df..b5ada229 100644
Binary files a/notes/pics/spring-aop-proxy.png and b/notes/pics/spring-aop-proxy.png differ
diff --git a/notes/pics/spring-circular.png b/notes/pics/spring-circular.png
index 6cfca540..fd2cf777 100644
Binary files a/notes/pics/spring-circular.png and b/notes/pics/spring-circular.png differ
diff --git a/tools/diagram/src/spring-aop-proxy.svg b/tools/diagram/src/spring-aop-proxy.svg
index 8b50e5e0..f53f6f9b 100644
--- a/tools/diagram/src/spring-aop-proxy.svg
+++ b/tools/diagram/src/spring-aop-proxy.svg
@@ -1,46 +1,43 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="680" height="230" viewBox="0 0 680 230">
   <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="340" y="28" class="title">自调用不经过代理</text>
-  <rect x="22" y="84" width="90" height="50" rx="6" class="shadow"/>
-  <rect x="20" y="82" width="90" height="50" rx="6" fill="#DDD7F6"/>
+  <rect x="20" y="82" width="90" height="50" rx="6" fill="#E6E3FA" stroke="#B8B0DE"/>
   <text x="65" y="111.5" class="b c">调用方</text>
-  <rect x="192" y="64" width="150" height="90" rx="6" class="shadow"/>
-  <rect x="190" y="62" width="150" height="90" rx="6" fill="#B0E3E6"/>
+  <rect x="190" y="62" width="150" height="90" rx="6" fill="#C6ECE9" stroke="#7DBCB7"/>
   <text x="265" y="92" class="c b">代理对象</text>
   <text x="265" y="114" class="c sub">执行切面逻辑</text>
   <text x="265" y="132" class="c sub">例如开启、提交事务</text>
-  <rect x="402" y="52" width="260" height="140" rx="6" class="shadow"/>
-  <rect x="400" y="50" width="260" height="140" rx="6" fill="#B1DDF0"/>
+  <rect x="400" y="50" width="260" height="140" rx="6" fill="#C6E4FB" stroke="#7FB2D6"/>
   <text x="412" y="72" class="b">原始对象</text>
   <rect x="420" y="86" width="200" height="34" rx="4" fill="#FFFFFF" stroke="#C8C8C8"/>
   <text x="520" y="107.5" class="c mono sub">outer()</text>
diff --git a/tools/diagram/src/spring-circular.svg b/tools/diagram/src/spring-circular.svg
index 4129417a..bf7bb363 100644
--- a/tools/diagram/src/spring-circular.svg
+++ b/tools/diagram/src/spring-circular.svg
@@ -1,31 +1,31 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="720" height="400" viewBox="0 0 720 400">
   <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"/>
@@ -39,32 +39,32 @@
   <text x="650" y="74" class="c sub">生成提前引用的工厂</text>
   <rect x="20" y="90" width="680" height="50" rx="6" fill="#F7F7F7"/>
   <text x="32" y="120">① 实例化 A，把 A 的工厂放入三级缓存</text>
-  <rect x="602" y="102" width="96" height="26" rx="4" fill="#DDD7F6" stroke="#C8C8C8"/>
+  <rect x="602" y="102" width="96" height="26" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="650" y="119.5" class="c sub">A 的工厂</text>
   <rect x="20" y="146" width="680" height="50" rx="6" fill="#FFFFFF"/>
   <text x="32" y="176">② 填充 A 的属性时需要 B，实例化 B</text>
-  <rect x="602" y="150" width="96" height="20" rx="4" fill="#DDD7F6" stroke="#C8C8C8"/>
+  <rect x="602" y="150" width="96" height="20" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="650" y="164.5" class="c sub">A 的工厂</text>
-  <rect x="602" y="172" width="96" height="20" rx="4" fill="#DDD7F6" stroke="#C8C8C8"/>
+  <rect x="602" y="172" width="96" height="20" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="650" y="186.5" class="c sub">B 的工厂</text>
   <rect x="20" y="202" width="680" height="50" rx="6" fill="#F7F7F7"/>
   <text x="32" y="222">③ 填充 B 时需要 A：调用 A 的工厂，</text>
   <text x="54" y="240">得到 A 的提前引用，移入二级缓存</text>
-  <rect x="492" y="214" width="96" height="26" rx="4" fill="#DDD7F6" stroke="#C8C8C8"/>
+  <rect x="492" y="214" width="96" height="26" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="540" y="231.5" class="c sub">A（未完成）</text>
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+  <rect x="602" y="214" width="96" height="26" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="650" y="231.5" class="c sub">B 的工厂</text>
   <rect x="20" y="258" width="680" height="50" rx="6" fill="#FFFFFF"/>
   <text x="32" y="288">④ B 拿到 A，完成初始化</text>
-  <rect x="382" y="270" width="96" height="26" rx="4" fill="#B1DDF0" stroke="#C8C8C8"/>
+  <rect x="382" y="270" width="96" height="26" rx="4" fill="#C6E4FB" stroke="#C8C8C8"/>
   <text x="430" y="287.5" class="c sub">B</text>
-  <rect x="492" y="270" width="96" height="26" rx="4" fill="#DDD7F6" stroke="#C8C8C8"/>
+  <rect x="492" y="270" width="96" height="26" rx="4" fill="#E6E3FA" stroke="#C8C8C8"/>
   <text x="540" y="287.5" class="c sub">A（未完成）</text>
   <rect x="20" y="314" width="680" height="50" rx="6" fill="#F7F7F7"/>
   <text x="32" y="344">⑤ A 拿到 B，完成初始化</text>
-  <rect x="382" y="318" width="96" height="20" rx="4" fill="#B1DDF0" stroke="#C8C8C8"/>
+  <rect x="382" y="318" width="96" height="20" rx="4" fill="#C6E4FB" stroke="#C8C8C8"/>
   <text x="430" y="332.5" class="c sub">A</text>
-  <rect x="382" y="340" width="96" height="20" rx="4" fill="#B1DDF0" stroke="#C8C8C8"/>
+  <rect x="382" y="340" width="96" height="20" rx="4" fill="#C6E4FB" stroke="#C8C8C8"/>
   <text x="430" y="354.5" class="c sub">B</text>
   <text x="20" y="384" class="sub">A 需要 AOP 代理时，工厂在第 ③ 步直接返回 A 的代理，B 拿到的就是最终放入容器的对象。</text>
 </svg>