feat(admin): refine theme settings UI

assets/admin/src/pages/SchemaPage.vue

@@ -80,7 +80,7 @@
             <n-spin />
             <p style="margin-top:10px;color:#999;">加载中...</p>
           </div>
-          <div v-if="testResult && !testLoading" :style="{color: testResult.success ? '#18a058' : '#d03050', textAlign:'center', padding:'20px'}">
+          <div v-if="testResult && !testLoading" :style="{color: testResult.success ? 'var(--aksrt-color-primary)' : '#d03050', textAlign:'center', padding:'20px'}">
             <p style="font-size:16px;margin:0;">{{ testResult.message }}</p>
           </div>
           <div v-if="!testLoading && !testResult" id="captcha-test-box" style="min-height:150px;"></div>
@@ -462,7 +462,7 @@ onBeforeUnmount(() => {
 .aksrt-schema-page__field-hint {
   margin: 8px 0 0;
   font-size: 12px;
-  color: #8a909c;
+  color: var(--aksrt-color-muted);
 }
 
 .captcha-test-overlay {