Converting grayscale pdfs to metallic gold

[tinybluefish]

Hi everyone, I just posted this over on the Inesign boards but they suggested I might find my answer over here.  I'm producing a booklet in Inesign for a client. Most of it is grayscale but I have several pages of advertisements that are from gold level sponsors and therefore need to be printed in metallic gold. I've tried using the luminosity trick in Indesign but it left me with dark shades of gold into black, so, on advice from the other boards, I moved the ads into photoshop and created a spot channel. But what I'm getting there is the same.  My background is staying various shades of black and my text is turning gold. I have previous versions of the booklet in front of me and what the client is looking for is the backgrounds in whites and golds. I'm looking for some kind of process I can run all my ads through (they are pdfs) that will achieve this. Attaching some images to help explain. One shows the pdf as I have it - grayscale, the other shows it after a spot color is applied and the last one shows an example of what I'm trying to achieve (different pdf, but you get the idea - the white and gold not the black and gold). I feel I'm missing somehthing really obvious but I'm foxed!  Thanks.

[tinybluefish]

Edited to add - I think I figued it out using duotones. Thanks!

[Nancy OShea]

Yup.  Gold requires color outside the grayscale range.

[Trevor.Dennis]

Eye Candy 7 has a range of metalic effects. This is brushed gold.  The secret top shiny surfaces is that they reflect, so you need highlights and shadows.

You can do a gold effect with Layer Style Bevel & Emboss using one of the two radical gloss contors (The W shaped contor and the one next to it. I like to use a colour overlay layer style as it lets you experiment with the colour.  You also need to experiment with the shading 'Altitude' as small changes can make a lot of difference.

Another option is to indent the surface using Bevel & Emboss again but setting the Direection to Down, and setting Fill Opacity to zero.