Light default formatting changes modal

src/definitions/modules/modal.less

@@ -42,7 +42,8 @@
   user-select: text;
 }
 
-.ui.modal > :first-child {
+.ui.modal > :first-child:not(.icon),
+.ui.modal > .icon:first-child + * {
   border-top-left-radius: @borderRadius;
   border-top-right-radius: @borderRadius;
 }
@@ -92,6 +93,7 @@
 
   font-size: @headerFontSize;
   font-weight: @headerFontWeight;
+  color: @headerColor;
   border-bottom: @headerBorder;
 }
 

src/themes/packages/default/modules/modal.variables

@@ -23,7 +23,8 @@
 /* Header */
 @headerMargin: 0em;
 @headerPadding: 1.5rem 2rem;
-@headerBackground: #FFFFFF;
+@headerBackground: @lightBlack;
+@headerColor: @white;
 @headerFontSize: 1.6em;
 @headerFontWeight: bold;
 @headerFontFamily: @headerFont;