diff --git a/extensions/theme-abyss/themes/abyss-color-theme.json b/extensions/theme-abyss/themes/abyss-color-theme.json
index 215a83ed2d7..ab38aea7ebc 100644
--- a/extensions/theme-abyss/themes/abyss-color-theme.json
+++ b/extensions/theme-abyss/themes/abyss-color-theme.json
@@ -373,7 +373,7 @@
 
 		// Workbench: Panel
 		// "panelBackground": "",
-		"panelTopBorder": "#2b2b4a",
+		"panelBorder": "#2b2b4a",
 		// "panelActiveTitleBorder": "",
 		// "panelActiveTitleForeground": "",
 		// "panelInactiveTitleForeground": "",
diff --git a/extensions/theme-solarized-dark/themes/solarized-dark-color-theme.json b/extensions/theme-solarized-dark/themes/solarized-dark-color-theme.json
index 710060d65ea..f9fba765d28 100644
--- a/extensions/theme-solarized-dark/themes/solarized-dark-color-theme.json
+++ b/extensions/theme-solarized-dark/themes/solarized-dark-color-theme.json
@@ -409,7 +409,7 @@
 
 		// Workbench: Panel
 		// "panelBackground": "",
-		"panelTopBorder": "#2b2b4a",
+		"panelBorder": "#2b2b4a",
 		// "panelActiveTitleBorder": "",
 		// "panelActiveTitleForeground": "",
 		// "panelInactiveTitleForeground": "",
diff --git a/src/vs/workbench/browser/parts/panel/panelPart.ts b/src/vs/workbench/browser/parts/panel/panelPart.ts
index baf3f657b28..ecb723a5330 100644
--- a/src/vs/workbench/browser/parts/panel/panelPart.ts
+++ b/src/vs/workbench/browser/parts/panel/panelPart.ts
@@ -25,7 +25,7 @@ import { IInstantiationService } from 'vs/platform/instantiation/common/instanti
 import { ActionsOrientation, ActionBar } from 'vs/base/browser/ui/actionbar/actionbar';
 import { ClosePanelAction, PanelAction, ToggleMaximizedPanelAction } from 'vs/workbench/browser/parts/panel/panelActions';
 import { IThemeService, registerThemingParticipant, ITheme, ICssStyleCollector } from 'vs/platform/theme/common/themeService';
-import { PANEL_BACKGROUND, PANEL_BORDER_TOP_COLOR, PANEL_ACTIVE_TITLE_COLOR, PANEL_INACTIVE_TITLE_COLOR, PANEL_ACTIVE_TITLE_BORDER } from 'vs/workbench/common/theme';
+import { PANEL_BACKGROUND, PANEL_BORDER_COLOR, PANEL_ACTIVE_TITLE_COLOR, PANEL_INACTIVE_TITLE_COLOR, PANEL_ACTIVE_TITLE_BORDER } from 'vs/workbench/common/theme';
 import { highContrastOutline, focus } from 'vs/platform/theme/common/colorRegistry';
 
 export class PanelPart extends CompositePart<Panel> implements IPanelService {
@@ -104,7 +104,7 @@ export class PanelPart extends CompositePart<Panel> implements IPanelService {
 		container.style('background-color', this.getColor(PANEL_BACKGROUND));
 
 		const title = this.getTitleArea();
-		title.style('border-top-color', this.getColor(PANEL_BORDER_TOP_COLOR));
+		title.style('border-top-color', this.getColor(PANEL_BORDER_COLOR));
 	}
 
 	public openPanel(id: string, focus?: boolean): TPromise<Panel> {
diff --git a/src/vs/workbench/common/theme.ts b/src/vs/workbench/common/theme.ts
index 61a45012a5a..67ff0350ad0 100644
--- a/src/vs/workbench/common/theme.ts
+++ b/src/vs/workbench/common/theme.ts
@@ -102,11 +102,11 @@ export const PANEL_BACKGROUND = registerColor('panelBackground', {
 	hc: editorBackground
 }, nls.localize('panelBackground', "Panel background color. Panels are shown below the editor area and contain views like output and integrated terminal."));
 
-export const PANEL_BORDER_TOP_COLOR = registerColor('panelTopBorder', {
+export const PANEL_BORDER_COLOR = registerColor('panelBorder', {
 	dark: Color.fromRGBA(new RGBA(128, 128, 128)).transparent(0.35),
 	light: Color.fromRGBA(new RGBA(128, 128, 128)).transparent(0.35),
 	hc: highContrastBorder
-}, nls.localize('panelTopBorder', "Panel border color on the top separating to the editor. Panels are shown below the editor area and contain views like output and integrated terminal."));
+}, nls.localize('panelBorder', "Panel border color on the top separating to the editor. Panels are shown below the editor area and contain views like output and integrated terminal."));
 
 export const PANEL_ACTIVE_TITLE_COLOR = registerColor('panelActiveTitleForeground', {
 	dark: '#E7E7E7',