I want to know how to edit those light effects because I want to make a Dark one for my underground levels in my second hack New Super Mario Land DS, does anyone know how I can edit them?

if you knows let me know please
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The star project that shows my brilliant mind

In the View settings, there should be an option named "3D Lighting". There're six lightings you can choose from, but making custom lightings require ASM.
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that's exactly what i meant, well i'll have to stay like this

I not know nothing about "ASM"
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The star project that shows my brilliant mind