[hisnameispip]

He's beautiful! So glad that he has a forever home with you where he'll be looked after.

I'm not well-versed in hammy genetics and colors, but I just looked up some things on hammy colors and I found another hamster that looked similar to yours- just the color on the ears and solid yellow-ish/white-ish everywhere else. So I think your ham has the Dominant Spot gene- all of the pigment concentrated on one area, in his case the ears. Typically if you search online for "dominant spot hamster" or something like that, you'll see hammies with actual spots of color in a concentrated area, such as part of their back or across the face. But it's not uncommon for there to be dominant-spotted ears.

Hope this answers your question about his genes/coat color. I know my explanation isn't a complete one but I think it's a step in the right direction.