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opentui: fatal: undefined is not an object (evaluating 'c3[mode2]') when using custom theme. #4365
Description
Description
This error occurs in latest when the project-local opencode.json file contains:
{
"$schema": "https://opencode.ai/config.json",
"theme": "my-matrix"
}
The file at ~/.config/opencode/themes/my-matrix.json is a modified version of the standard Matrix theme with this one line only changed:
"background": { "dark": "none", "light": "none" },
TypeError: undefined is not an object (evaluating 'c3[mode2]')
at resolveColor (src/cli/cmd/tui/context/theme.tsx:64:25)
at <anonymous> (src/cli/cmd/tui/context/theme.tsx:67:18)
at map (native:1:11)
at resolveTheme (src/cli/cmd/tui/context/theme.tsx:66:57)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at readSignal (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:660:67)
at get (src/cli/cmd/tui/context/theme.tsx:106:18)
at <anonymous> (src/cli/cmd/tui/app.tsx:531:17)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createRenderEffect (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:240:75)
at <anonymous> (src/cli/cmd/tui/app.tsx:517:5)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at devComponent (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:593:3)
at children (src/cli/cmd/tui/context/helper.tsx:18:24)
at <anonymous> (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1057:29)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createMemo (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:273:10)
at children (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:616:20)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at <anonymous> (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1052:36)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createRenderEffect (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:240:75)
at provider (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1052:5)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at devComponent (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:593:3)
at <anonymous> (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1532:21)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createMemo (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:273:10)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at devComponent (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:593:3)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at devComponent (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:593:3)
at children (src/cli/cmd/tui/component/dialog-command.tsx:88:14)
at <anonymous> (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1057:29)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createMemo (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:273:10)
at children (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:616:20)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at <anonymous> (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1052:36)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at createRenderEffect (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:240:75)
at provider (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:1052:5)
at untrack (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:475:12)
at runComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:742:22)
at updateComputation (../../node_modules/.bun/[email protected]/node_modules/solid-js/dist/dev.js:724:3)
at devComponent (../../node_modules/.bun/[email protected]...
OpenCode version
1.0.65
Steps to reproduce
No response
Screenshot and/or share link
No response
Operating System
MacOS latest Sequoia
Terminal
iTerm2
Activity
github-actions commentedon Nov 16, 2025
This issue might be a duplicate of existing issues. Please check:
All of these issues appear to be related to the same underlying problem in theme resolution at
resolveColor (src/cli/cmd/tui/context/theme.tsx:64:25)when custom themes contain certain values that can't be processed properly.Feel free to ignore if none of these address your specific case.
rekram1-node commentedon Nov 16, 2025
fixed