Oobe: update text color on user creation radio card

Bug: 1101318
Change-Id: I47aa52dc235f4f9f0cc63ecf32b4f3cb14fb1f1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363756
Commit-Queue: Yunke Zhou <yunkez@google.com>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799639}

chrome/browser/resources/chromeos/login/user_creation.html

@@ -45,6 +45,10 @@ found in the LICENSE file. -->
         padding-top: 16px;
       }
 
+      .card-text {
+        color: var(--oobe-text-color);
+      }
+
       oobe-dialog {
         --oobe-dialog-content-padding-top: 0;
       }
@@ -71,7 +75,7 @@ found in the LICENSE file. -->
               <div class="card-label">
                 [[i18nDynamic(locale, 'createForSelfLabel')]]
               </div>
-              <div>
+              <div class="card-text">
                 [[i18nDynamic(locale, 'createForSelfDescription')]]
               </div>
             </div>
@@ -84,7 +88,7 @@ found in the LICENSE file. -->
               <div class="card-label">
                 [[i18nDynamic(locale, 'createForChildLabel')]]
               </div>
-              <div">
+              <div class="card-text">
                 [[i18nDynamic(locale, 'createForChildDescription')]]
               </div>
             </div>