Het Red?

[snakesRkewl]

Technically, if the animal shows outward signs of carrying a gene, then it is NOT a recessive gene...it would just be a subtle incomplete dominant gene.

If it's truly a recessive gene, the animal will not be distinguishable from a normal. Albino is an example of a recessive gene. There are no 'markers' for het albino. You simply can't tell them apart from normals.

You keep believing that

I think to be more accurate you should have typed you yourself simply cannot tell them apart, but that doesn't mean others can't