Okay, got my dash kit modified today and I'm reasonably satisfied with it. I took the standard Scosche TA2106B and then painted the inside ring with Krylon Fusion matte black. I actually got this idea here on the forum, so I'm happy I came across it since there's just too much silver there in my opinion - the Metra kit even seems to be worse without the border around it.

I actually painted it twice; the first time I didn't mask properly, and then in a hasty attempt to correct it, I tried to use a model brush to touch it up - big mistake! I let it dry for 48 hours, sanded out the rough areas from the brush, and then tried a different masking technique which worked out much better. I'm obviously not a model painter . I did use Tamiya 10mm masking tape for the area right around the border and the stuff works pretty well.

One other thing I noticed is that Krylon Fusion matte black still has a slight sheen, despite my efforts to keep it shaken well and lay down thin coats (you can see it in the upper corner of the photo where it looks like paint is missing, but it's actually a reflection). It's closer to a satin I would say. Nevertheless, I'm quite picky, but I don't think anyone riding in my vehicle would note the imperfections.