fix artificial cursor color.

lib/widget.js

@@ -326,6 +326,9 @@ function Screen(options) {
     this.cursorShape = options.cursorShape || 'block';
     this.cursorBlink = options.cursorBlink || false;
     this.cursorColor = options.cursorColor || null;
+    if (this.cursorColor) {
+      this.cursorColor = colors.convert(this.cursorColor);
+    }
     this.cursorState = 1;
     this._cursorHidden = true;
     var hideCursor = this.program.hideCursor;
@@ -1020,16 +1023,20 @@ Screen.prototype.draw = function(start, end) {
           && x === this.program.x
           && y === this.program.y) {
         if (this.cursorShape === 'line') {
+          data &= ~(0x1ff << 9);
           data |= 7 << 9;
           ch = '\u2502';
         } else if (this.cursorShape === 'underline') {
+          data &= ~(0x1ff << 9);
           data |= 7 << 9;
           data |= 2 << 18;
         } else if (this.cursorShape === 'block') {
+          data &= ~(0x1ff << 9);
           data |= 7 << 9;
           data |= 8 << 18;
         }
         if (this.cursorColor != null) {
+          data &= ~(0x1ff << 9);
           data |= this.cursorColor << 9;
         }
       }

test/widget.js

@@ -8,7 +8,7 @@ screen = blessed.screen({
   cursorShape: 'line',
   cursorBlink: true,
   cursorColor: null
-
+  //cursorColor: 'red'
 });
 
 screen.append(blessed.text({