Similar to that of a torch bug, it can creates a chemical in a Mythikan's body which creates markings to 'glow'. However you can choose to use Iridescent marking style if you would like to.
Should you not have any other markings than Shine, you will need to look at the Iridescent marking style as that has a couple options for you.
If you have a sphynx breed, ideally you would need to look at the Iridescent marking style, however you are not bounded to this.
Sphynx build Mythikans are more commonly known for getting this type of marking style than the Illuminated marking style.
Illuminated Marking Style
Texture:


Colouration and interactions with other markings:
This creates a very pale saturated marking area with a glow of what colour you are wanting to use - please refer to the Admin decline / request regarding what admins can potentially request from you.
Iridescent Marking Style
Texture:

Colouration and interactions with other markings:
If you have Shine and Spectral, it is possible to create an iridescence which you can find on birds and have multiple shades of iridescence.
Every part of this iridescence must be blended together and there must not be any random shapes cut out of the area, unless you are taking it from the spine down through a leg for example.
You can create the iridescent to make the bones beneath the skin 'pop' out - but this must be stated in your marking description when submitting your Mythikan in for approving.
With Dual tone, you can make iridescent appear as two toned.
Providing that you state it in your marking description, you can make the iridescent to appear under Defier which will only be effective on the tail.
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