GeneratePress automatic colorize

Hi. Is there anything like an automatic or, manual "colorize" app? Like, I choose a main color, and it automatically selects other colors like, menu on mouse hover, link, link click etc.? I guess not. That would be something nice. Because later when you wanna change the color of links, and u wanna keep it like over the whole site, then u have to switch between different tabs and always have to go back and forth to set the correct colors.

Well, as you can see on https://www.freakyness.de I'm not very much of a color expert. So I thouhgt someone or something that can choose colors fitting together well would be really helpful.

Thanks, freaky :)