How can you not get such a simplistic example?
How can you not get that an individual that has better camouflage against the background environment is less likely to become the lunch of a predator then one that is less camouflaged?
Again: it's almost like you are doing this on purpose.
Consider you are a Ukranian sniper looking for Russians to kill.
In your field of view, there is a russian hidden somewhere with excellent camouflage.
There is another wearing a bright orange jumpsuit.
Which one will die first?