The litmus paper turns Orange. Because it has a pH of 4 so it's orange. :)
Pink
It will turn purple
it turns into fushia/purpley colour
Phenolphthalein is an indicator often used in chemical titrations. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. The more basic the solution the pinker the solution will become when Phenolphthalein is present.
Most likely, no. The tomato juice will turn your skin redder.
It should be clear. Phenolphthalein doesn't change color in the presence of an acid, only a base.
Orange
A tomato sauce is cooked and is generally made up of tomatoes together with other ingrdients for example onions, garlic seasonings. Tomato juice is uncooked and is made simply of pureed tomatoes and nothing else except perhaps some added salt. You can't turn the sauce into the juice by adding water though you can turn the tomato juice into a sauce by adding other ingredients and cooking them together
Phenolphthalein only gives colour to bases with a pH above approximately 8.2-10. Then it gives a pink colour. As HCL is a strong acid it becomes colourless.
Red
blue
It will turn colourless.
Alkalis turn red cabbage juice blue/green/yellow.