修改主题颜色按钮尺寸

src/layout/components/Settings/index.vue

@@ -28,7 +28,7 @@
     <div class="drawer-item">
       <span>主题颜色</span>
       <span class="comp-style">
-        <el-color-picker v-model="theme" :predefine="predefineColors" @change="themeChange"/>
+        <el-color-picker size="small" v-model="theme" :predefine="predefineColors" @change="themeChange"/>
       </span>
     </div>
     <el-divider />