To me, it does look like a New Guinea impatiens plant, one of the ones with variegated leaves. It might even be one of the newer SunPatiens, bred to tolerate more sunlight than the original New Guines impatiens.

Compare the plant in your photo to the photos of New Guinea impatiens with variegated leaves that I found by doing a Google search:

Images of New Guinea Impatiens with Variegated Leaves

I picked up a couple of SunPatiens on sale that look a lot like yours, but mine are more salmon in color. If that is what yours is, please don't leave it in all day sun. It may be more heat tolerant than regular impatiens, but it needs afternoon shade for sure.

Dawn & Sandplum, the tag did say SunPatiens but I thought that was a company not the name of the flower!! duh, I feel stupid now. Thank you both for your info. You are the best :)