Huli ka!

The Makati City government has announced that senior citizens who are residents are exempted from color coding within the city limits. However, in order to qualify, said residents would have to register for the BLU card program.

In terms of implementation, all that's needed is that a senior citizen with a BLU card is in the vehicle, whether as the driver or a passenger. They don't even need to own the vehicle in question. If they are apprehended, they should just present the BLU card to the apprehending enforcer and they get away scot-free.

Anyway, the rules are kinda iffy since it is most likely that their vehicle will be asked to pull over a lot. However, this is still the preferable method since having some kinda sticker would be open to abuse. It's still better than not being able to use their vehicle, though.

Read more about it here.