What does the Text Messaging contact icon color signify?

[AC Question]

Text Messaging contacts icon color.

What does the text messaging contact color (green, blue, gold) signify.

 

[GrantWilsonZIMBABWE]

There is no significance of the colors - they have no link or reason to any specific contacts, and are not random as some people suggest.

At least the varying colors of the contacts is not random on my phone (Galaxy S5).
Each time I add a contact it selects the next color in the sequence...
Blue, Green, Orange, Orange
Blue, Green, Orange, Orange...

It just looks untidy in the Contacts list, and I see no way of changing it - apart from adding a contact a few times until it's the color you want, and deleting the unwanted ones. You could also create some simple color pictures to assign to each profile picture (if you don't have their photo)