First Question:

Is there a way to recolor a fence? I can't seem to find a tutorial for it.

Second Question:

Can I recolor a modular stair? Or do I have to clone it?

And Lastly:

Is it possible to recolor the roof like this?

http://www.raphaelk.co.uk/web%20pic...al%20Palace.jpg

Because when I tried, I saw that the roof texture, the texture itself is in random orders, so I have no idea where to put the right pattern. etc.

No idea regarding the roof, but for fences you have to clone them and give them a new object guid.

For stairs you also have to clone them but they need a new script also for the modularstairs.txt file.

Numenor has made some recolourable modular stairs - the deck stairs, iron stairs and holy smoke stairs, so maybe try recolouring them, just search for Numenor under search members and have a nose through his downloads, I think the stairs are on pages 3-5

Okay thanks for the answers.

I'll check Numenor's colorable stairs if they're close to the ones I wanted to recolor.