What is the best primer for masonite siding?

I am repainting my sons room. The top half is a lighter brown and the bottom is a cranberry. Our new color is very dark brown….is there any problem with just painting over the cranberry right away or do I need to prime the cranberry first?

Can molding be all the same color or can it be different throughout the home?

I want to hire a painter for one of my interior rooms but, he does not have any insurance. What can I do?

Does elastomeric paint come in a clear?

I am remolding a home and I am getting ready to prime all the walls. I am going to use Kilz Original Primer. Is there a certain length of time I have to get the finish coat on the walls after the primer is applied?

I’m unclear about this. Do I sand the walls after priming them? Do I have to? What grit # would I use?

If flat finish paint is used over semigloss, will it stay or will it run and peal off? I have semi gloss in my living room and every time the couch touches the wall the paint sticks to it. The paint has been dry/on the wall for two years. So