Index: src/wp-admin/css/colors/_mixins.scss
===================================================================
--- src/wp-admin/css/colors/_mixins.scss	(revision 34217)
+++ src/wp-admin/css/colors/_mixins.scss	(working copy)
@@ -4,31 +4,32 @@
  */
 @mixin button( $button-color, $text-color: white ) {
 	background: $button-color;
-	border-color: darken( $button-color, 10% );
+	border-color: darken( $button-color, 8% ) darken( $button-color, 10% ) darken( $button-color, 10% );
 	color: $text-color;
-	box-shadow: inset 0 1px 0 lighten( $button-color, 15% ), 0 1px 0 rgba(0,0,0,.15);
+	box-shadow: 0 1px 0 darken( $button-color, 10% );
+	text-shadow: 0 -1px 1px darken( $button-color, 12% ),
+		1px 0 1px darken( $button-color, 12% ),
+		0 1px 1px darken( $button-color, 12% ),
+		-1px 0 1px darken( $button-color, 12% );
 
 	&:hover,
 	&:focus {
-		background: darken( $button-color, 5% );
+		background: lighten( $button-color, 3% );
 		border-color: darken( $button-color, 15% );
 		color: $text-color;
-		box-shadow: inset 0 1px 0 lighten( $button-color, 10% );
+		box-shadow: 0 1px 0 darken( $button-color, 15% );
 	}
 
 	&:focus {
-		box-shadow: inset 0 1px 0 lighten( $button-color, 10% ),
-		            0 0 0 1px #5b9dd9,
-		            0 0 2px 1px rgba( 30, 140, 190, .8 );
+		box-shadow: inset 0 1px 0 darken( $button-color, 10% ),
+					0 0 2px 1px #33b3db;
 	}
 
 	&:active {
 		background: darken( $button-color, 10% );
 		border-color: darken( $button-color, 15% );
-		color: $text-color;
-	 	box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 ),
-		            0 0 0 1px #5b9dd9,
-		            0 0 2px 1px rgba( 30, 140, 190, .8 );
+		color: hsl( hue( $button-color ), 50%, 80% );
+	 	box-shadow: inset 0 2px 0 darken( $button-color, 15% );
 	}
 
 	&[disabled],
Index: src/wp-admin/css/press-this.css
===================================================================
--- src/wp-admin/css/press-this.css	(revision 34217)
+++ src/wp-admin/css/press-this.css	(working copy)
@@ -462,12 +462,12 @@
 	-webkit-appearance: none;
 	line-height: 2;
 	padding: 0 10px 1px;
-	background: #00a0d2;
-	border-color: #0073aa;
+	background: #0085ba;
+	border-color: #0085ba #0073aa #0073aa;
 	border-width: 1px;
 	border-style: solid;
-	-webkit-box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.5), 0 1px 0 rgba( 0, 0, 0, 0.15 );
-	box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.5 ), 0 1px 0 rgba( 0, 0, 0, 0.15 );
+	-webkit-box-shadow: 0 1px 0 #0073aa;
+ 	box-shadow: 0 1px 0 #0073aa;
 	color: #fff;
 }
 
@@ -486,42 +486,39 @@
 	border-top-right-radius: 3px;
 	-webkit-border-bottom-right-radius: 3px;
 	border-bottom-right-radius: 3px;
-	border-left: 0 none;
+	border-left: 1px solid #006799;
 	float: right;
 }
 
 .split-button-toggle i {
 	margin: 4px 20px 3px 0;
 	padding: 0 10px;
-	border-left: 1px solid #fff;
 }
 
 .split-button-primary:hover,
 .split-button-toggle:hover {
 	outline: none;
-	background: #0091cd;
-	border-color: #0073aa;
+	background: #008ec2;
+	border-color: #006799;
 }
 
 .split-button-primary:focus,
 .split-button-toggle:focus {
 	outline: none;
-	border-color: #0e3950;
-	-webkit-box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.6 ),
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-	box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.6 ),
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+	-webkit-box-shadow: 0 1px 0 #0073aa,
+		0 0 2px 1px #33b3db;
+	box-shadow: 0 1px 0 #0073aa,
+		0 0 2px 1px #33b3db;
 }
 
 .split-button-primary:active,
 .split-button-toggle:active {
 	background: #0073aa;
-	border-color: #005082;
+	border-color: #006799;
 	color: rgba( 255, 255, 255, 0.95 );
-	-webkit-box-shadow: inset 0 1px 0 rgba( 0, 0, 0, 0.1 );
-	box-shadow: inset 0 1px 0 rgba( 0, 0, 0, 0.1 );
+	-webkit-box-shadow: inset 0 2px 0 #006799;
+ 	box-shadow: inset 0 2px 0 #006799;
+ 	transform: translateY(1px);
 }
 
 /**
@@ -1438,15 +1435,15 @@
 
 .scan-submit:hover,
 .scan-submit:focus {
-	background: #2991b7;
-	border-color: #20708e;
+	background: #008ec2;
+	border-color: #006799;
 	color: #fff;
 	outline: 0;
 }
 
 .scan-submit:active {
-	background: #2581a2;
-	border-color: #20708e;
+	background: #0073aa;
+	border-color: #006799;
 	color: #fff;
 }
 
Index: src/wp-includes/css/buttons.css
===================================================================
--- src/wp-includes/css/buttons.css	(revision 34217)
+++ src/wp-includes/css/buttons.css	(working copy)
@@ -131,8 +131,8 @@
 	color: #555;
 	border-color: #cccccc;
 	background: #f7f7f7;
-	-webkit-box-shadow: inset 0 1px 0 #fff, 0 1px 0 rgba( 0, 0, 0, 0.08 );
-	box-shadow: inset 0 1px 0 #fff, 0 1px 0 rgba( 0, 0, 0, 0.08 );
+	-webkit-box-shadow: 0 1px 0 #cccccc;
+	box-shadow: 0 1px 0 #cccccc;
  	vertical-align: top;
 }
 
@@ -164,10 +164,10 @@
 .wp-core-ui .button-link:focus {
 	-webkit-box-shadow:
 		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+		0 0 2px 1px rgba(0, 115, 170, .8);
 	box-shadow:
 		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+		0 0 2px 1px rgba(0, 115, 170, .8);
 }
 
 .wp-core-ui .button.active,
@@ -179,17 +179,18 @@
 	color: #32373c;
  	-webkit-box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
  	box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
+ 	transform: translateY(1px);
 }
 
 .wp-core-ui .button.active:focus {
 	-webkit-box-shadow:
 		inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 ),
 		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+		0 0 2px 1px rgba(0, 115, 170, .8);
 	box-shadow:
 		inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 ),
 		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+		0 0 2px 1px rgba(0, 115, 170, .8);
 }
 
 .wp-core-ui .button[disabled],
@@ -213,36 +214,35 @@
 ---------------------------------------------------------------------------- */
 
 .wp-core-ui .button-primary {
-	background: #00a0d2;
-	border-color: #0073aa;
- 	-webkit-box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.5), 0 1px 0 rgba( 0, 0, 0, 0.15 );
- 	box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.5 ), 0 1px 0 rgba( 0, 0, 0, 0.15 );
+	background: #0085ba;
+	border-color: #0085ba #0073aa #0073aa;
+	-webkit-box-shadow: 0 1px 0 #0073aa;
+ 	box-shadow: 0 1px 0 #0073aa;
  	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,
 .wp-core-ui .button-primary:hover,
 .wp-core-ui .button-primary.focus,
 .wp-core-ui .button-primary:focus {
-	background: #0091cd;
-	border-color: #0073aa;
- 	-webkit-box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.6 );
- 	box-shadow: inset 0 1px 0 rgba( 120, 200, 230, 0.6 );
+	background: #008ec2;
+	border-color: #006799;
+	-webkit-box-shadow: 0 1px 0 #006799;
+ 	box-shadow: 0 1px 0 #006799;
 	color: #fff;
 }
 
 .wp-core-ui .button-primary.focus,
 .wp-core-ui .button-primary:focus {
-	border-color: #0e3950;
-	-webkit-box-shadow:
-		inset 0 1px 0 rgba( 120, 200, 230, 0.6 ),
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-	box-shadow:
-		inset 0 1px 0 rgba( 120, 200, 230, 0.6 ),
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
+	-webkit-box-shadow: 0 1px 0 #0073aa,
+		0 0 2px 1px #33b3db;
+	box-shadow: 0 1px 0 #0073aa,
+		0 0 2px 1px #33b3db;
 }
 
 .wp-core-ui .button-primary.active,
@@ -250,10 +250,10 @@
 .wp-core-ui .button-primary.active:focus,
 .wp-core-ui .button-primary:active {
 	background: #0073aa;
-	border-color: #005082;
-	color: rgba( 255, 255, 255, 0.95 );
- 	-webkit-box-shadow: inset 0 1px 0 rgba( 0, 0, 0, 0.1 );
- 	box-shadow: inset 0 1px 0 rgba( 0, 0, 0, 0.1 );
+	border-color: #006799;
+ 	-webkit-box-shadow: inset 0 2px 0 #006799;
+ 	box-shadow: inset 0 2px 0 #006799;
+ 	color: rgba( 255, 255, 255, 0.95 );
  	vertical-align: top;
 }