I just completed upgrading my TAF with LEDs for the inserts. I was on the fence about it for a while because many of the 'upgraded' machines I've seen have either the colors intentionally changed or the LEDs look out of place (color is a shade off, varied brightness, etc.).
For anyone else on the fence about it because you like that "original" look, with the LEDOCD kit (which makes the LEDs fade like incandescent and allows you to control brightness per insert) and the right LEDs, it will look exactly like the original, but with brighter, more vivid inserts. I strongly recommend it.
I managed to color match virtually every insert to where you can't tell if it's the original incandescent or an LED....however, the 5 inserts that seem to be difficult are those not-yellow-but-not-orange mansion (gold?) inserts (Mamushka, Raise the Dead, etc.). I've found it very difficult to find an LED that both matches the original color and the brightness of the other LEDs in the mansion.
I found that Comet's "amber/orange" single SMD is spot on color-wise but not bright enough. Unfortunately, their "amber/orange" dual SMD is not a brighter version of the same color, it's much too orange.
The purpose of this post is twofold I guess - first, if anyone is considering the upgrade and wants to know the LEDs I used, I'm happy to tell you. Second, has anyone out there managed to find an LED that matches the color of those 5 gold mansion inserts and is also bright?