Incomplete.
I'm not sure how dyelite works (besides poorly, lulz), but anyway. This is an autoit script that will search the dyebox for your hex color to variation and place a small crosshair above all matching colors. The crosshair isn't super visible but it helps to find your specific color. Not really very useful for doing black on the cloth palette, for example, since there's a ton of pure black in that palette.
Providing this in case someone finds it useful and in the hopes someone knows how dyelite works or has an idea of viably determining where matching pixels need to be for the color picker in game. If someone knows how or can determine a relatively reliable way of knowing where the color picker will pick its other colors from I'd gladly incorporate it, write up a gui and make this an exe.
I'd say feel free to /discuss but we don't do none of that around here.