Strike

Theme generator for Flynt. Write one template per app, generate all variants.

Install

brew tap flynt-theme/tap
brew install strike

Or with Go:

go install github.com/flynt-theme/strike/cmd/strike@latest

Usage

strike build <template> [flags]

Flags:
  --palette   Path or URL to palette.json  (default: flynt-theme/flynt on GitHub)
  --out       Output directory             (default: template directory)
  --combined  Render once with both dark and light contexts (for single-file themes)
  --check     Exit non-zero if outputs are stale, without writing

Example - build from a local palette:

strike build theme.yaml.tmpl --palette ../flynt/palette.json

Example - single-file theme (e.g. Obsidian):

strike build theme.css.tmpl --combined

Example - CI check (verify committed files match the template):

strike build theme.yaml.tmpl --check

Template format

Templates are plain text files with a YAML frontmatter block:

---
output: flynt-{{ .variant }}.yaml
---
# file body — any format, rendered as a Go template
accent: '{{ .amber }}'
background: '{{ .bg }}'
foreground: '{{ .tx }}'

Strike renders one output file per palette variant (dark, light). The output line is itself a template - use .variant to produce separate filenames.

Template variables

Variant

Variable	Example values
.variant	dark, light
.label	Flynt Dark, Flynt Light

Base tokens

Variable	Token
.bg	bg
.bg2 - .bg5	bg-2 through bg-5
.tx	tx
.tx2 - .tx5	tx-2 through tx-5

All values are hex strings with a # prefix (e.g. #100E0C).

Accent primaries (shade 500)

.ember .clay .amber .moss .fern .teal .delft .iris .plum .rose

Full shade range

{{ index (index .shades "amber") "400" }}

Available shades: 50 100 150 200 300 400 500 600 700 800 850 900 950

Template functions

Function	Example	Output
hex2rgb	{{ hex2rgb .amber }}	198,159,42
hex2rgbf	{{ hex2rgbf .amber }}	0.7765 0.6235 0.1647
hexchan	{{ hexchan .amber "r" }}	0.7765
nohash	{{ nohash .amber }}	C69F2A
shade	{{ shade .dark.shades "amber" "400" }}	hex string
lower	{{ lower .variant }}	dark
upper	{{ upper .label }}	FLYNT DARK

hexchan accepts "r", "g", or "b" as the channel argument. Useful for formats like iTerm2 that need each component on a separate line.

License

MIT - Flynt Theme