Look Sharp 6
You have to download the photo on this one and look at exactly what colours I have used for the left and right-hand halves. You must download it direct from the geocaching website as a PNG file - don't change it to a jpeg or anything else as it mucks up the colours. Also make sure you do not change the colour profile - the photo was created with sRGB IEC61966-2.1, which tends to be the default for most people.
Feel free to contact me if you have problems.