You can, but it will stick out like a sore thumb unless you paint it after. We just built a wooden porch over it.
This site breaks it down into 12 easy to follow steps:
Please consider posting a photo. If we can see what you have to work with we will then be able to offer realistic suggestions and hopefully a solution on how you might be able to improve the stair problem..
Thank you all so much, I will post photos.Ruth