Difference between c[h] and c[chm] on a Light Red Fox

[Shanawaz]

Greetings!

Qays and Layla produced their first litter a week ago. We're really excited to see that the pups have started growing their fuzz. We have, what looks like, a light red fox among other colours in the mix. (Siamese and Burmese too!)

The parents carry the following genes:

Sire: Qays - Spotted Siamese, aa c[h]c[chm] Dd Ee Uwuw Pp Spsp (Sired by Pied Light Cream, hence carries uw recessive)
Dam: Layla - Black, aa Cc[chm] DD Ee UwUw Pp Spsp

My question is,

Is there a difference in the lightening effects of c[h] and c[chm] on the ee coat? Does either gene lighten the coat more than the other? Also, would the other recessive genes add on to the lightening?

It would be useful if you could share some pictures too. I will, of course, update with pictures once the pups' fuzz have grown fully and their colours are more visible.

Best Regards

[Shooting Star]

At least in theory, Cc[h]ee will be slightly lighter than Cc[chm]ee. But it's very subtle, and can be influenced by other factors. These are Nutmegs:

[Shanawaz]

Thank you Shooting Star!

Also, there is a black eyed white pup in the litter. She has the typical colourpoint eyes so I'm guessing she is a l/cp nutmeg. How can I figure out if the pup is a CP nutmeg or LCP nutmeg?

[Shanawaz]

I'm thinking he is a Lt Red fox carrying 'chm' since he is visibly not as light as my previous Lt Red Foxes carrying 'ch'.
What do you think?

[MoonstoneGerbils]

Its difficult to tell the difference between ch and chm carriers, even on ee coats. Definitely lightened, but its very hard to say by which one unless you know that only one or the other is in the mix.