2. Get the Correct Color Settings
It’s a good idea to set up InDesign’s color settings before you actually add any color to the document (see Figure 2).
In this exercise, the document will be printed digitally only, so you’ll set up your document to work predominantly in RGB. Similar to working with RGB in Photoshop, you’ll have access to a larger group of colors.
However, InDesign enables you to have a mixed RGB and CMYK workflow, which means that you can selectively choose individual colors to be printed only as CMKY values. The color management engine is identical to that of Photoshop CS3.
For this example, you’ll use Adobe RGB as your working space. To set this up, you can use one of the default canned color management settings: Europe Prepress 2. Using this rather flexible workspace, the document can be nicely represented by a large range of digital printers and digital presses.
If you plan to use some sort of transparent effect (Drop Shadow, Glow, and so on), you must also change your transparency blend space to RGB. This can be found under the edit Transparency Blend Space > Document RGB. This procedure acts like merging layers in Photoshop.
When you output the document, InDesign has to choose between RGB or CMYK, so choose RGB. It is important that the RGB workspace is correct because InDesign uses it to flatten the images.
Figure 2 Set the correct color management and document color settings.