Improve focus border contrast for quiet light, solarized light, and monokai themes (#168237)

Fix #165386

extensions/theme-monokai/themes/monokai-color-theme.json

@@ -61,7 +61,7 @@
 		"pickerGroup.foreground": "#75715E",
 		"input.background": "#414339",
 		"inputOption.activeBorder": "#75715E",
-		"focusBorder": "#75715E",
+		"focusBorder": "#99947c",
 		"editorWidget.background": "#1e1f1c",
 		"debugToolBar.background": "#1e1f1c",
 		"diffEditor.insertedTextBackground": "#4b661680", // middle of #272822 and #a6e22e

extensions/theme-quietlight/themes/quietlight-color-theme.json

@@ -476,7 +476,7 @@
       	}
 	],
 	"colors": {
-		"focusBorder": "#A6B39B",
+		"focusBorder": "#9769dc",
 		"pickerGroup.foreground": "#A6B39B",
 		"pickerGroup.border": "#749351",
 		"list.activeSelectionForeground": "#6c6c6c",

extensions/theme-solarized-light/themes/solarized-light-color-theme.json

@@ -327,7 +327,7 @@
 	"colors": {
 		// Base
 		// "foreground": "",
-		"focusBorder": "#D3AF86",
+		"focusBorder": "#b49471",
 		// "contrastActiveBorder": "",
 		// "contrastBorder": "",
 		// "widget.shadow": "",