:welcome:Stan,

Welcome to X5 World. I can't speak to lowering, but there is a pic you can search that shows the Dinan kit. Personally, I like the height, but then if I want to ride low I take my Z4.

On the grille colour, in North America the 3.0si is black and the 4.8i has a "titanium coloured" grille. That applies to both the verticals in the kidney grille and the mesh below. In Europe, the 3.0d has the "titanium coloured" grille and mesh. If it is anything like the kits on the E53 it should be relatively easy to paint yourself.

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07 X5 E70 4.8i
04 Z4 E85 3.0