hello there i tryed this the other day to answer this question and it turns white, looks abit like cream if u add loads.
the tea lightens
The leaf should turn blue-black when iodine is added, indicating the presence of starch.
Iodine turns a dark blue or black color when added to starch. This reaction is often used as a test to detect the presence of starch in a solution.
It turns greenLOL
To turn green black, add black.
black
Ammonia will turn pink when phenolphthalein is added, indicating that the solution is basic.
Limewater will turn milky white when carbon dioxide is added to it due to the formation of calcium carbonate.
Black is not a colour and therefor cannot be made by using a colour. Black is a shade of every colour imaginable, just like white. Black is created when all of the shades one colour combine so that they are all absorbed and turn darker and darker.
When iodine is added to a leaf with no starch, the leaf will remain its original color (usually green). Iodine reacts with starch molecules, turning the leaf blue-black if starch is present.
Universal indicator turns red when added to vinegar, indicating that the vinegar is acidic.
A neutral solution added to universal indicator will turn green.