Changed hash based color calc to a hash indexed palette as discussed in the pull request.

     */

    private final LruCache<String, int[]> mUnknownContactsCache;

    private final static int CONTACT_DUMMY_COLORS_ARGB[] = {

        0xffff0000, // 0 R, G, B

        0xff00ff00,

        0xff0000ff,

        0xffff8000, // 3 mix ff with 80

        0xff0080ff,

        0xff80ff00,

        0xff8000ff,

        0xffff0080,

        0xff00ff80,

        0xff8040ff, // 9 mit 80 with 40 and ff

        0xff80ff40,

        0xffff4080,

        0xffff8040,

        0xff40ff80,

        0xff4080ff,

    };

    public ContactPictureLoader(Context context, int defaultPictureResource) {

        Context appContext = context.getApplicationContext();

    private int calcUnknownContactColor(Address address) {

        int val = address.getAddress().toLowerCase().hashCode();

    	int rgb = 

    			(0xff) << 24 |

    			(~val & 0xff) << 16 |

    			(val & 0xff) << 8 |

    			(val>>>8 & 0xff);

        int rgb = CONTACT_DUMMY_COLORS_ARGB[val % CONTACT_DUMMY_COLORS_ARGB.length];

    	return rgb;

    }