Feat: Replace color variables according to design draft #3221 (#9305)

### What problem does this PR solve?

Feat: Replace color variables according to design draft #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/dataset/testing/testing-result.tsx

@@ -65,7 +65,7 @@ export function TestingResult({
   return (
     <div className="p-4 flex-1">
       <div className="flex justify-between pb-2.5">
-        <span className="text-text-title font-semibold text-2xl">
+        <span className="text-text-primary font-semibold text-2xl">
           Test results
         </span>
         <FilterPopover