According to Engadget
Disneyland is doing an upgrade to their monorail system. The monorail system has had pretty much the same “futuristic look” for the last 50 years. The new cards will come in a variety of colors according to reports.
The first in line will feature blue glass and red stripes that “change color in the sunlight,” while the next two will be blue with purple glass and orange with blue glass.
Cool, sort of like a large mood ring on a track.