Let's eliminate the variables of comparing multiple guitars, which also eliminates the variability of the wood, the person doing the job, the differences in batches of paint, etc. Now let's also eliminate the variables of viewing a photo on different monitors. Let's even remove the variable of different cameras.
Let's imagine using one camera to photograph one guitar body with a Tiger's Eye finish on a sunny day, on a cloudy day, at sunrise, at sunset, in full sun, and in full shade, then taking more pictures of it in rooms with white walls, pink walls, brown walls, red walls, blue walls, and green walls, with fluorescent lights, LED lights, and incandescent lights...and then viewing all those unedited pictures on a single monitor.
It's easy to imagine that the perceived color of the guitar in those photos is going to vary quite a bit, and that is just one of the variables we are juggling when comparing the "brown" photo to the "Tiger's Eye" photo above.
I totally understand someone wanting to be sure of getting the exact color they want when they spend their hard-earned money. I feel the same way when I purchase things with the money I worked hard to earn. However, with custom built things made from organic materials, dyed and painted by real human hands, there will always be a certain range of variance. Some people are willing to accept that variance, while others are not, and that is perfectly fine. Everybody should do what makes them happy.
