In my honest opinion from the one picture provided.

- Doesn't look like a Yellowbelly in anyway!
- Possibly a Pastel: I have seen some really brown pastels and this one could be one
- Possibly a Normal: I have seen some normals with extreme yellow toward the belly like that. My buddy has a normal that has Neon Yellow sides at 2 years that looks almost identical to that one minus the slight blushing on the back.