Hi Penny,
Word and Publisher are 'limited' to 16 million colors. Fluorescene though would be an 'ink' limitation of the printer. That is,
most color printers are using 'matte' (flat finish) inks to produce the colors.
Reproduced 'fluorescent' colors are often not one solid color but a graphic with multiple shades. For fluorescent green, for
example, you can start with a lime green with RGB values of around 24,255,24 (among others). In printing, Fluorescent colors can be
achieved in offset rather than digital printing use specific inks. You may want to check with your local printshop. (Hexachrome
colors [6 'channel'] are used to support Fluorescent color printing.
Adding black background or borders will 'brighten' the green to appear more fluorescent.
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I don't know "a little VBA." But I've used the color modification options in
Publisher (the ones that change the RGB) and still can't get the colors I'm
looking to replicate. The colors are fluorescent orange and fluorescent green. >>
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Let us know if this helped you,
Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*
For Everyday MS Office tips to "use right away" -
http://microsoft.com/events/series/administrativetipsandtricks.mspx