Colored first letter icons in Email App

[AC Question]

I just upgraded my N4 to 4.4.4 from 4.3. One thing I noticed in my Email app is that the first letter from a recipient is now a block letter 'icon' that's colored.

Is there any rhyme or reason on what colors are associated with each recipient?

Thanks.

 

[Paul627g]

Far as I can tell it's randomly picked colors, nothing specific. The letter picked is the first letter of the subject title or senders name.

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