feat: improve color palette, cf2021 layout updates

source/_data/data.json

...e/_patterns/00-atoms/03-buttons/02-button-colors.mustache

.../00-atoms/03-buttons/04-button-with-hover-effect.mustache

...atterns/00-atoms/03-buttons/button-hover-targets.mustache

source/_patterns/01-molecules/16-chips/chip-colors.mustache

.../01-molecules/20-dropdown-button/dropdown-button.mustache

...-simplified-navbar/simplified-navbar-with-avatar.mustache

...anisms/08-event-feed/event-feed-with-action-menu.mustache

.../_patterns/02-organisms/08-event-feed/event-feed.mustache

source/_patterns/03-templates/cf2021/anonymous.mustache

source/_patterns/03-templates/cf2021/chairman.mustache

source/_patterns/03-templates/cf2021/user.mustache

source/css/molecules/chips.pcss

tailwind.config.js