The OpenData.je Jersey Theme extension provides the official visual identity and user experience design for the Bailiwick of Jersey’s primary open data portal, implementing Channel Islands government branding, British Crown dependency styling, and Jersey-specific functionality designed for comprehensive government transparency and citizen engagement in this unique British Crown dependency. This official Crown dependency theme incorporates the States of Jersey’s visual identity including official colors, governmental logos, typography, and design patterns while maintaining compliance with British accessibility standards, Crown dependency digital service guidelines, and international government transparency requirements. The extension includes custom page layouts optimized for Crown dependency government data presentation, specialized templates for Jersey governmental datasets, and integration with Jersey’s digital government infrastructure and British Crown dependency administrative systems. Advanced features include Jersey localization with Jèrriais cultural elements where appropriate, specialized widgets for displaying Crown dependency statistics, governmental performance data, and Jersey-specific geographic, economic, and demographic data visualization appropriate for residents, businesses, and stakeholders interested in Jersey’s unique governmental and economic status. The theme provides enhanced navigation structures tailored to Jersey resident needs, quick access to frequently requested Crown dependency data categories, and integration with Jersey government platforms and British Crown dependency service systems. Customizations include specialized dataset categories for Crown dependency operations, enhanced search functionality with Jersey parish-based filtering and Crown dependency governmental classification, and mobile-optimized interfaces designed for resident and business access to Jersey government services and information. Administrative features provide content management tools for States of Jersey staff, workflow integration with Crown dependency governmental systems, and analytics tracking for public data usage and citizen engagement patterns. Integration capabilities include connections to Jersey government databases, British Crown dependency networks, and Channel Islands governmental platforms for comprehensive Crown dependency civic engagement. Essential for Jersey’s governmental transparency initiatives, supporting Crown dependency transparency requirements, enhancing resident and business access to Jersey government data, and promoting democratic participation through improved data accessibility and appropriate user experience design that reflects Jersey’s unique status as a British Crown dependency with its own parliamentary government, legal system, and economic framework serving residents, businesses, and international stakeholders.