CarolC,

"When paintball paint impacts a person, it sticks to the person. That's what it does. There is no excess and it doesn't spray off. It sticks to people"

Except YOU have stated it is NOT paint- so it would not act that way.

You can't claim it MUST act like paint, but it is not.

The pattern as shown coulD be A NUMBER of other red fluids- blood, hydraulic fluid, dye, etc. THAT is what makes your statement "Since it does not act like paint, it MUST be blood." false. It MIGHT be blood- it might not- the spray pattern is not enough to determine that.