add invertSelected option to List. fixes #124.

README.md

@@ -695,6 +695,8 @@ A scrollable list which can display selectable items.
   item that is found in `items`.
 - __interactive__ - whether the list is interactive and can have items selected
   (default: true).
+- __invertSelected__ - whether to automatically override tags and invert fg of
+  item when selected (default: `true`).
 
 ##### Properties:
 

lib/widget.js

@@ -3969,7 +3969,8 @@ Element.prototype.render = function() {
           attr = this.screen.attrCode(c[0], attr, dattr);
           // Ignore foreground changes for selected items.
           if (this.parent._isList && this.parent.interactive
-              && this.parent.items[this.parent.selected] === this) {
+              && this.parent.items[this.parent.selected] === this
+              && this.parent.options.invertSelected !== false) {
             attr = (attr & ~(0x1ff << 9)) | (dattr & (0x1ff << 9));
           }
           ch = content[ci] || bch;

test/widget.js

@@ -69,9 +69,11 @@ var list = blessed.list({
   height: '50%',
   top: 'center',
   left: 'center',
+  tags: true,
+  invertSelected: false,
   items: [
     'one',
-    'two',
+    '{red-fg}two{/red-fg}',
     'three',
     'four',
     'five',