you only make that mistake once. Next time use a bush and a coffee can. My guess is the light spots are were the material got absorbed into the top. That paint they used was put on thick over bare metal. It will soak up like a sponge. The rustoliem takes a month to dry. If it doesn't even out by then recoat it. But it is a day and night difference in appearance. Don't worry about the drive way it will ware off.
As soon as I spilled it I ran in asking my wife for a bucket of water. I was looking for something to cut the paint and I grabbed some charcoal lighter fluid (not my safest moment). The paint was already sticky and wouldnt come off. so sprayed some lighter fluid on it and I was able to wipe it away. Later I went and bought another can of acetone and applied it indirectly via a terry towel and was able to get the rest of the paint smears/smudges off.
So I saved her paint. Now I just have to get her rim clean.