If a particular base template does not offer the particular colors you want, then that’s where your personal touch, creativity and effort comes into play. Again, please remember that templates are starting points for you to take and modify and customize from there. They are not meant to be out-of-the-box turnkey websites.
The kind of modifications you are wanting can be relatively easily accomplished by working with the relative css files associated with the modules you want to modify – generally the background colors of the relative modules and module headers (h1).
Good Luck !!