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Neon Grids
officialSynthwave theme: black background, electric-cyan primary with magenta/pink contrast, perspective grid icons.
darksynthwaveneonmagenta

Custom themes
Custom themes allow you to change the theme by defining color tokens and variants in a sirenodeck.json manifest — but you can also override the React primitive UI components for deeper customization. Start with tokens for a quick restyle, then drop in your own components when you need pixel-level control. Use the creation skill to build and test your own theme.
Palette
background#000000
frame#ff00ff
foreground#ff5fd0
primary#00e5ff
accent#8a2be2
Mini deck preview
Mute
♫
OBS
Usage
Install this separate theme package, then reference it from yourconfig.yml:
sirenodeck install --global @sireno-deck/theme-neon-gridstheme: @sireno-deck/theme-neon-gridsAny string that isn't a registered theme or filesystem path is resolved as an npm package — seetheme authoring or thecreation skill.