This has come up quite a few times, the problem is that we had similar color pickers in our old theme PlatformPro. When developer PageLines Framework, we went through all user feedback and generally, users found all these color pickers confusing. That is why we removed them in PageLines Framework and didn't include such option(s) in DMS.
Basically, it would mean adding a color picker to all other options minus image uploaders. This would mean for example, the Masthead section, there would be a color picker for the Title field, another for the sub title field and so forth.
Ideally, this is something that a third party store developer should probably build, that way only users who want this functionality will install it and not become confused with all the added options.