How can i remove what looks like mold from my vinyl siding on my trailer?

it is under my windows and i was wondering if any household products i already have can be sprayed on it if not what do i need to get ?

is there such a thing as vinyl siding that looks like brick?

if there is, where can I find out more information about it?

I am looking for a pull behind wood siding camper? It looks like a log cabin on wheels.?

I seen one at the ross county fair two years ago. It was with the other campers. It looked so cute like a small log cabin on wheels.
Now I would really like to buy one but have no idea how to find one..please help jody

Who makes log cabin siding that looks like wood logs but is not real wood?