If you are going for the round hole look why not just powder coat your trail rims black. I think the trail rims in black look better than these.
The reason I would like to go with totally different wheels is for the reduction in weight. I actually thought of your suggestion but my whole reason for doing this would be to reduce the weight that I added when I changed the stock tires to duratracs. It will not bring me completely back down to the stock numbers though it will help in bringing back some of the lost power.