In my opinion sunglow is a amel motley selectiv breeding
because the motley pattern lighten up and reduce the white - so it appears to 'glow'
this is was i learnd years ago ...but things changes
What I see is a nice but slender amel and amel means there is no black.
Amel morphs comes tru so many facettes...one have white, one are more red, one are more orange ...
best you can do is to see on
http://iansvivarium.com/morphs/?m=amelanistic how different amel can be