Most first visits come from a phone, often from a parked car, a beach chair or a waiting room. That shapes the design more than any color choice. Headlines should tell a visitor what you do and where within a glance, images need to be compressed so pages load on weak signal near the water, and the main action (call, book, request a quote) belongs above the fold.
Forms that respect the visitor
Shorter forms get finished. Ask only what you need to respond, explain what happens next, and send a confirmation. For practices handling health information, forms should be built with privacy rules in mind, and for businesses that follow up by text, consent wording should be clear so outreach stays within calling and texting rules.
Accessibility also matters here. A large retired population and many visitors mean readable type sizes, good contrast, labeled buttons and keyboard support are simply part of doing the job properly, and they help search engines read the page too.