I have a fiberglass shower stall which is in fine shape but the color is outdated (harvest gold). I am wanting to remodel bathroom in different and updated colors. Is there a way to refinish or paint the shower stall that will last and look good? Is this a do-it-yourself or will I need to hire professional? The shower stall although very small, is still too big to take out, without busting it up, and would require me to use tile or something else for a total new shower, also cost would be a lot higher. Thanks