Adjust look of content-choice-creation

src/app/components/creator/content-choice-creator/content-choice-creator.component.scss

 form > button {
   margin: 20px 0;
 }
+
+mat-header-cell {
+  background-color: #ffe0b2;
+}
+
+mat-cell {
+  background-color: #ffecb3;
+}