Index: src/wp-admin/css/common.css
===================================================================
--- src/wp-admin/css/common.css	(revision 45915)
+++ src/wp-admin/css/common.css	(working copy)
@@ -624,14 +624,14 @@
 	top: -3px;
 	text-decoration: none;
 	border: none;
-	border: 1px solid #ccc;
+	border: 1px solid #a1acb5;
 	border-radius: 2px;
-	background: #f7f7f7;
+	background: #fff;
 	text-shadow: none;
 	font-weight: 600;
 	font-size: 13px;
 	line-height: normal; /* IE8-IE11 need this for buttons */
-	color: #0073aa; /* some of these controls are button elements and don't inherit from links */
+	color: #006799; /* some of these controls are button elements and don't inherit from links */
 	cursor: pointer;
 }
 
@@ -641,14 +641,14 @@
 
 .wrap .add-new-h2:hover, /* deprecated */
 .wrap .page-title-action:hover {
-	border-color: #008EC2;
-	background: #00a0d2;
-	color: #fff;
+	background: #f3f5f6;
+	border-color: #a1acb5;
+	color: #006799;
 }
 
 /* lower specificity: color needs to be overridden by :hover and :active */
 .page-title-action:focus {
-	color: #124964;
+	color: #016087;
 }
 
 /* Dashicon for language options on General Settings and Profile screens */
@@ -658,8 +658,8 @@
 }
 
 .wrap .page-title-action:focus {
-	border-color: #5b9dd9;
-	box-shadow: 0 0 2px rgba(30, 140, 190, 0.8);
+	border-color: #006799;
+	box-shadow: 0 0 0 1px #006799;
 	/* Only visible in Windows High Contrast mode */
 	outline: 2px solid transparent;
 }
Index: src/wp-admin/css/forms.css
===================================================================
--- src/wp-admin/css/forms.css	(revision 45915)
+++ src/wp-admin/css/forms.css	(working copy)
@@ -50,8 +50,8 @@
 input[type="radio"]:focus,
 select:focus,
 textarea:focus {
-	border-color: #5b9dd9;
-	box-shadow: 0 0 2px rgba(30, 140, 190, 0.8);
+	border-color: #006799;
+	box-shadow: 0 0 0 1px #006799;
 	/* Only visible in Windows High Contrast mode */
 	outline: 2px solid transparent;
 }
Index: src/wp-includes/css/buttons.css
===================================================================
--- src/wp-includes/css/buttons.css	(revision 45915)
+++ src/wp-includes/css/buttons.css	(working copy)
@@ -123,10 +123,9 @@
 
 .wp-core-ui .button,
 .wp-core-ui .button-secondary {
-	color: #555;
-	border-color: #cccccc;
-	background: #f7f7f7;
-	box-shadow: 0 1px 0 #cccccc;
+	color: #006799;
+	border-color: #a1acb5;
+	background: #fff;
 	vertical-align: top;
 }
 
@@ -140,16 +139,18 @@
 .wp-core-ui .button.focus,
 .wp-core-ui .button:focus,
 .wp-core-ui .button-secondary:focus {
-	background: #fafafa;
-	border-color: #999;
-	color: #23282d;
+	background: #f3f5f6;
+	border-color: #a1acb5;
+	color: #006799;
 }
 
 .wp-core-ui .button.focus,
 .wp-core-ui .button:focus,
 .wp-core-ui .button-secondary:focus {
-	border-color: #5b9dd9;
-	box-shadow: 0 0 3px rgba(0, 115, 170, 0.8);
+	background: #f3f5f6;
+	border-color: #006799;
+	color: #016087;
+	box-shadow: 0 0 0 1px #006799;
 }
 
 .wp-core-ui .button.active,
@@ -158,7 +159,6 @@
 .wp-core-ui .button-secondary:active {
 	background: #eee;
 	border-color: #999;
-	box-shadow: inset 0 2px 5px -3px rgba(0, 0, 0, 0.5);
 	transform: translateY(1px);
 }
 
@@ -241,15 +241,10 @@
 ---------------------------------------------------------------------------- */
 
 .wp-core-ui .button-primary {
-	background: #0085ba;
-	border-color: #0073aa #006799 #006799;
-	box-shadow: 0 1px 0 #006799;
+	background: #006799;
+	border-color: #006799;
 	color: #fff;
 	text-decoration: none;
-	text-shadow: 0 -1px 1px #006799,
-		1px 0 1px #006799,
-		0 1px 1px #006799,
-		-1px 0 1px #006799;
 }
 
 .wp-core-ui .button-primary.hover,
@@ -256,15 +251,14 @@
 .wp-core-ui .button-primary:hover,
 .wp-core-ui .button-primary.focus,
 .wp-core-ui .button-primary:focus {
-	background: #008ec2;
-	border-color: #006799;
+	background: #46799a;
+	border-color: #46799a;
 	color: #fff;
 }
 
 .wp-core-ui .button-primary.focus,
 .wp-core-ui .button-primary:focus {
-	box-shadow: 0 1px 0 #0073aa,
-		0 0 2px 1px #33b3db;
+	box-shadow: 0 0 0 1px #fff, 0 0 0 3px #006799;
 }
 
 .wp-core-ui .button-primary.active,
@@ -271,9 +265,9 @@
 .wp-core-ui .button-primary.active:hover,
 .wp-core-ui .button-primary.active:focus,
 .wp-core-ui .button-primary:active {
-	background: #0073aa;
+	background: #006799;
 	border-color: #006799;
-	box-shadow: inset 0 2px 0 #006799;
+	transform: translateY(1px);
 }
 
 .wp-core-ui .button-primary[disabled],
@@ -280,32 +274,14 @@
 .wp-core-ui .button-primary:disabled,
 .wp-core-ui .button-primary-disabled,
 .wp-core-ui .button-primary.disabled {
-	color: #66c6e4 !important;
-	background: #008ec2 !important;
-	border-color: #007cb2 !important;
+	color: #66C6E4 !important;
+	background: #008EC2 !important;
+	border-color: #008EC2 !important;
 	box-shadow: none !important;
-	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.1) !important;
+	text-shadow: none !important;
 	cursor: default;
 }
 
-.wp-core-ui .button.button-primary.button-hero {
-	box-shadow: 0 2px 0 #006799;
-}
-
-.wp-core-ui .button.button-primary.button-hero:focus {
-	box-shadow:
-		0 2px 0 #006799,
-		0 1px 0 #0073aa,
-		0 0 2px 1px #33b3db;
-}
-
-.wp-core-ui .button.button-primary.button-hero.active,
-.wp-core-ui .button.button-primary.button-hero.active:hover,
-.wp-core-ui .button.button-primary.button-hero.active:focus,
-.wp-core-ui .button.button-primary.button-hero:active {
-	box-shadow: inset 0 3px 0 #006799;
-}
-
 /* ----------------------------------------------------------------------------
   4.0 - Button Groups
 ---------------------------------------------------------------------------- */
@@ -324,14 +300,6 @@
 	margin-right: -1px;
 }
 
-.wp-core-ui .button-group > .button-primary {
-	z-index: 100;
-}
-
-.wp-core-ui .button-group > .button:hover {
-	z-index: 20;
-}
-
 .wp-core-ui .button-group > .button:first-child {
 	border-radius: 3px 0 0 3px;
 }
@@ -340,11 +308,19 @@
 	border-radius: 0 3px 3px 0;
 }
 
+.wp-core-ui .button-group > .button-primary + .button {
+	border-left: 0;
+}
+
 .wp-core-ui .button-group > .button:focus {
 	position: relative;
 	z-index: 1;
 }
 
+.wp-core-ui .button-group > .button:active {
+	transform: translateY(0);
+}
+
 /* ----------------------------------------------------------------------------
   5.0 - Responsive Button Styles
 ---------------------------------------------------------------------------- */
@@ -406,4 +382,4 @@
 		padding: 0 12px 2px;
 	}
 
-}
+}
\ No newline at end of file