Two friends are playing a board game that requires each of them to roll a die. Each

Question:

Two friends are playing a board game that requires each of them to roll a die. Each player uses her/his own die.
a. What is the sample space for a single roll if their dice are painted two different colors?
b. What if both dice are white-does this change anything?
c. What if one person rolls both dice-does this change anything?