Like it's been said, the green/yellow/red are ALWAYS in the same spot. The only difference is it's either vertical or horizontal. If the top light's blinking, you know it's blinking red...middle light, yellow, etc.
And if you have trouble seeing the colors from a distance, then those shapes aren't going to help much either.
And if you have trouble seeing the colors from a distance, then those shapes aren't going to help much either.