what colour is this ammonia reading?

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Harriet

Aquarium Advice Regular
Joined
Jul 31, 2020
Messages
96
Location
Uk
i’m having trouble reading this ammonia reading the tank is cycled so it shouldn’t have any ammonia the nitrites are zero and the nitrates are between 10-20 i also read that you might see the colour better if you look down the tube instead but idk if that’s accurate so i took pictures of both in natural sunlight
 

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i was so unsure i think it might just be the way my eye is seeing the colour against the paper one second i thought it was green the other i thought yellow
 
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