c) In black and white

When it is very clear who or what is right and wrong, then the situation is black and white.
" in black and white means in writing."

as flat as a pancake:
Extremely level, especially too much so. For example, There are no hills; this terrain is flat as a pancake. This simile dates from the 1500s and has survived its contemporary, flat as a flounder.

Paper 1991

A turncoat is a person who shifts allegiance from one loyalty or ideal to another, betraying or deserting an original cause by switching to the opposing side or party. In political and social history, this is distinct from being a traitor, as the switch mostly takes place under the following circumstances:
In groups, often driven by one or more leaders.
When the former cause driving and benefitting the person becomes inviable or too fraught with danger.

__________________
Life is the name of competition.
Competition end, life end.