The next update includes aeon symbols for all of the colors in the game: black, red, blue, green, gray (no color) and gold (all colors).
Lost Portal CCG version 1.1.1 is available on the Apple App Store.
In addition to new aeon icons, this update includes additional help / tutorials for each screen. You can also now change difficulty levels in the middle of a campaign, along with other things like your portrait, color affinity and name.