A few days ago I rescued a female CT betta from a petco. She was stressed out when I got her, so her colors looked very different. She looked very much like this in the poor lighting of the store:
I have named her Twitch, since she is the most active and spazy of my girls.
Twitch is gunmetal grey with red fins, but she also has this full bodied bright silver iridescence that I find breath taking. Unfortunately this iridescence is hard to capture because my phone's camera has no flash.

I will try to get better pictures later. She was still adjusting to her new home when these were taken, so she is rather grumpy in them.