Of course lights do not illuminate an engraving as selectively as to allow for the color display in the image above. Instead I took pictures of the illumination in 16 different colors provided by an LED-stripe I recently purchased, put those images in layers on top of each other and then deleted the parts of layers which covered the parts of the engraving which I wanted to have in a different color for that image (note that there is no really good orange or anything more yellowish than the color I used for the mane and tail, which is why some of AJ's colors are a bit off).
…
For some reason this image brought up the idea in my head of the Flim Flam brothers putting up this as a sign in Las Pegasus to sell something claiming Applejack's approval again.