I'd love to be able to search the whole design for a certain color to be able to select all and change them all at one time!
I have solution, basically you add "Find Similar" button both on Attributes eyedropper and Color eyedropper,
For Attributes Eyedropper,First you click "Select Similar" on properties bar/ alt command/feature, then you click object on your scene. it asks you what properties do you want to select similar? Color? size? effects? outline? etc., then selects them for you. I think this is way better&easier solution to find&replace for this purpose. One step further is you click another object with "Replace Similar" button/feature/alt. command, and instead you click one by one all those objects this command does it for you with one click.
With Color eyedropper, you add a feature that finds same fills or outlines then you change them by "Fill Color" or "Fill outline" button on properties tab. it works as this:
1-as we know when you first select Color Eyedropper it shows you the eyedroper icon, before doing anything, if you choose "select Similar" then click the object it finds&selects all the objects that has the same color.
2- Select another color. done.
If you need "change colors" then you can use Color Styles. It change all of the colors in whole document (groups, powerclips, all pages, fountains, mesh) in seconds.
In Search and Replace for a color, allow both fills and outlines to be selected at the same time, or add a button that says Fills and Outlines.
Please see https://coreldraw.ideas.aha.io/ideas/CDGS-I-152, referring the GDG Macro. Everybody VOTE!
I would say 'Find & Replace' but for me, it never quite works right and doesn't seem to work with grouped objects. That said, Corel, please look at the GDG Color Click Extreme Macro and it's interface and functionality...Please! It would be a super valuable tool for this 'search by color' suggestion.