You create a texture in Corel texture, and you realy work at the pixel depths and layers until you get the right green - yellow - red mix for a gold, and the layered algorithnic filters for the feel of the metal, you then use the texture lights to add lustre. This is really labor intensive, maddening stuff, but you end up with a gold you'd swear was cast out of metal, and a brass, and a silver, if you wish.
You then save them as bit maps and use them as a bitmap fill in Photopaint, stretched across a rectangle (don't use original size).
This gives you a rectangle with a beautiful metallic effect.
You then open a linear radial fill and edit it so the lightest of the gold is in the centre of the edit bar and gradually transitioning through many shades to the darkest at each end(or whatever disposition of highlights and shadows you need).
Next save it as a preset. Save yr texture file and all the other files you've made, 'cos something will always clobber a graphics effect that takes the most work to achieve ..."Well, you shoulda told me you had files the textures directory you made yourself..." Y'know?
There's a site called
under construction... the lawyers' brass plates and all the book binds on the opening page took me hundreds of hours, but I now have all that stuff on a CD. Have a look see if its what you need (they look even better at 24 bit).