If the "dev" doesn't give a shit about design, the dev shouldn't be touching the design! I've seen far too many "sites" that are not a start, but a finish, wrapped in the homogenized turquoise blandness that is bootstrap. Sure it's possible to wrangle the CSS into something that might look better, but by then the "site" is already pigeonholed into functionality and structure defined by someone who "doesn't give a shit about design."