fix light colour for balancing light on map icons

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Name	Status	Preview	Updated (UTC)
kilowatts-grid	✅ Ready (Inspect)	Visit Preview	Feb 20, 2024 7:11pm

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🚀 Expo preview is ready!

• Project → kilowatts
• Platforms → android, ios
• Scheme → myapp
• Runtime Version → 1.1.21
• More info

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