BUG: SimpleMaterial.IsColorBlended

SimpleMaterial.IsColorBlended.set always sets to true. I think this is a (doh!) bug.

Here's the fix:

#region BUG(SDG)
        // always sets to true
#if !SDG_APPLY_BUGFIXES
        /// <summary>
        /// Whether or not to blend the color with the texture. The color is read from
        /// the vertex data.
        /// </summary>
        public bool IsColorBlended
        {
            get { return _isColorBlended; }
            set { _isColorBlended = true; }
        }
#endif
        #endregion
 
        #region BUGFIX(SDG)
#if SDG_APPLY_BUGFIXES
        /// <summary>
        /// Whether or not to blend the color with the texture. The color is read from
        /// the vertex data.
        /// </summary>
        public bool IsColorBlended
        {
            get { return _isColorBlended; }
            set { _isColorBlended = value; }
        }
#endif
        #endregion