I was just looking into these today (that is what led me to the forum), as I would love to add some color to my calipers without taking off the wheels. I don't want to put cover on because most of them look tacky to me, and for paint, I read somewhere that it decreases the trade-in value (does anyone know if that is true?) I would consider vinyl wrapping the entire thing but if there is an easier way to add a splash of color without too much effort, I am definitely interested. Also, to answer one of your questions above, for me it is all or nothing (seems odd to just do the front). Finally, there is one other place that I found that already has this product. I won't post it here out of respect for you, but it does appear for the rear calipers they recommend removing the wheels to properly apply.