it is clear.
Green is the color that universal indicator turns to when it is neutral.
The universal indicator turns red in acidic solutions.
Alkalis turn universal indicator blue or purple.
Universal indicator turns shades of blue or purple in an alkali.
purple
The universal indicator in saliva typically appears green or blue in color.
blue
Universal indicator would be dark blue or purple in a strong alkali.
Sugar typically turns yellow on universal indicator paper, indicating that it is acidic.
pH of ammonia is around 11-12. Hence when you put it in a universal indicator, you get purple color.
The universal indicator generally turns blue or purple with toothpaste, indicating that the toothpaste is basic.
Universal indicator changes to green when sodium bicarbonate is added.