The current color settings can become corrupted in Illustrator 9.0.2 when attempting to save the file as PDF using the Screen Optimized setting. (We have yet to confirm this behavior ourselves ...

Adobe Photoshop may be using the CMYK color mode, but change it to RGB. To make this change in Photoshop CS6 or CC 2018, open the file in Photoshop.

If the .EPS is currently in CMYK color format, ... Launch Adobe Illustrator, click "File," and then click "Open" to browse for your .EPS file. Double-click the file to load it.