Churches greatly effected the size and subject matter of artwork. This is because many large structures created more room to put larger artwork in. This includes murals, which have become very common in churches and historical large buildings. Much of the artwork in these buildings show historical events and religious beliefs.
Answer: Red usually is expressed through art as angry or aggression. Blue and soft blues are used to represent sad. Green is happy and yellow can be used as embarrassment. Pink/purple can be flirty.