Whichever the operator suggests.
No, the fire can't symbolise anything related to the situation, since fires can start in any house no matter what colour it's painted. A better representation would be if the claim was that, that house mattered because it was painted black. Thus implying that if it was painted green, or some other colour it wouldn't matter. To pretend the fire is the comparative aspect is deliberate blatant misrepresentation in the hope of fooling the gullible.