Dont hardcode as many color codes in xterm.ts

src/Terminal.ts

@@ -1890,9 +1890,10 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
     }
     if (this.options.bellStyles.indexOf(BellStyles.Visual) > -1) {
       var cursor = this.element.querySelector('.terminal-cursor') as HTMLElement;
+      var originalBackground = cursor.style.backgroundColor;
       cursor.style.backgroundColor = "#fff";
       setTimeout(function() {
-        cursor.style.backgroundColor = "#e6e6e6";
+        cursor.style.backgroundColor = originalBackground;
       }, 200);
     }
   }

src/xterm.css

@@ -94,12 +94,12 @@
 }
 
 .terminal:not(.focus) .terminal-cursor {
-    outline: 1px solid #e6e6e6;
+    outline: 1px solid #eeeeec;
     outline-offset: -1px;
 }
 
 .terminal.xterm-cursor-style-block.focus:not(.xterm-cursor-blink-on) .terminal-cursor {
-    background-color: #e6e6e6;
+    background-color: #eeeeec;
     color: #000;
 }
 
@@ -107,7 +107,7 @@
 .terminal.focus.xterm-cursor-style-underline:not(.xterm-cursor-blink-on) .terminal-cursor::before {
     content: '';
     position: absolute;
-    background-color: ##e6e6e6;
+    background-color: #eeeeec;
 }
 
 .terminal.focus.xterm-cursor-style-bar:not(.xterm-cursor-blink-on) .terminal-cursor::before {