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Adapt welcome screen colors for light mode (#1214)

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* Adapt welcome screen colors for light mode

Detect macOS appearance and use a darker cyan-to-purple gradient
with sufficient contrast (WCAG AA 4.5:1+) on light backgrounds.
Replace dim ANSI attribute with explicit true-color for light mode,
since dim can reduce contrast further against light backgrounds.

* Keep original gradient colors, only adapt tagline and dim text

The cyan-to-purple gradient looks good in both modes. Only the
tagline gray and dim description text need darker values for
light backgrounds.
This commit is contained in:
Lawrence Chen 2026-03-11 18:38:34 -07:00 • committed by GitHub
parent 320451e1f6
commit f71c2c144b
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GPG key ID: B5690EEEBB952194
1 changed files with 29 additions and 17 deletions
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46
CLI/cmux.swift
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@ -8035,10 +8035,12 @@ struct CMUXCLI {
private func printWelcome() {
let reset = "\u{001B}[0m"
let bold = "\u{001B}[1m"
let dim = "\u{001B}[2m"
func trueColor(_ red: Int, _ green: Int, _ blue: Int) -> String {
"\u{001B}[38;2;\(red);\(green);\(blue)m"
}
let isDark = UserDefaults.standard.string(forKey: "AppleInterfaceStyle") == "Dark"
let c1 = trueColor(0, 212, 255)
let c2 = trueColor(24, 181, 250)
let c3 = trueColor(48, 150, 245)
@ -8046,7 +8048,17 @@ struct CMUXCLI {
let c5 = trueColor(96, 88, 239)
let c6 = trueColor(110, 73, 238)
let c7 = trueColor(124, 58, 237)
let tagline = trueColor(130, 130, 140)
let tagline: String
let subdued: String
if isDark {
tagline = trueColor(130, 130, 140)
subdued = "\u{001B}[2m"
} else {
tagline = trueColor(90, 90, 98)
subdued = trueColor(100, 100, 108)
}
let logo = """
\(c1) ::\(reset)
@ -8061,14 +8073,14 @@ struct CMUXCLI {
let shortcuts = """
\(bold)Shortcuts\(reset)
\(bold)\u{2318}N\(reset)\(dim) New workspace\(reset)
\(bold)\u{2318}P\(reset)\(dim) Go to workspace\(reset)
\(bold)\u{2318}D\(reset)\(dim) Split right\(reset)
\(bold)\u{2318}\u{21E7}D\(reset)\(dim) Split down\(reset)
\(bold)\u{2318}\u{21E7}P\(reset)\(dim) Command palette\(reset)
\(bold)\u{2318}\u{21E7}R\(reset)\(dim) Rename workspace\(reset)
\(bold)\u{2318}\u{21E7}L\(reset)\(dim) New browser\(reset)
\(bold)\u{2318}\u{21E7}U\(reset)\(dim) Jump to latest unread\(reset)
\(bold)\u{2318}N\(reset)\(subdued) New workspace\(reset)
\(bold)\u{2318}P\(reset)\(subdued) Go to workspace\(reset)
\(bold)\u{2318}D\(reset)\(subdued) Split right\(reset)
\(bold)\u{2318}\u{21E7}D\(reset)\(subdued) Split down\(reset)
\(bold)\u{2318}\u{21E7}P\(reset)\(subdued) Command palette\(reset)
\(bold)\u{2318}\u{21E7}R\(reset)\(subdued) Rename workspace\(reset)
\(bold)\u{2318}\u{21E7}L\(reset)\(subdued) New browser\(reset)
\(bold)\u{2318}\u{21E7}U\(reset)\(subdued) Jump to latest unread\(reset)
"""
print()
@ -8076,14 +8088,14 @@ struct CMUXCLI {
print()
print(shortcuts)
print()
print(" \(bold)Docs\(reset)\(dim) https://cmux.dev/docs\(reset)")
print(" \(bold)Discord\(reset)\(dim) https://discord.gg/xsgFEVrWCZ\(reset)")
print(" \(bold)GitHub\(reset)\(dim) https://github.com/manaflow-ai/cmux (please leave a star ⭐)\(reset)")
print(" \(bold)Email\(reset)\(dim) founders@manaflow.com\(reset)")
print(" \(bold)Docs\(reset)\(subdued) https://cmux.dev/docs\(reset)")
print(" \(bold)Discord\(reset)\(subdued) https://discord.gg/xsgFEVrWCZ\(reset)")
print(" \(bold)GitHub\(reset)\(subdued) https://github.com/manaflow-ai/cmux (please leave a star ⭐)\(reset)")
print(" \(bold)Email\(reset)\(subdued) founders@manaflow.com\(reset)")
print()
print(" \(dim)Run \(reset)\(bold)cmux --help\(reset)\(dim) for all commands.\(reset)")
print(" \(dim)Run \(reset)\(bold)cmux shortcuts\(reset)\(dim) to edit shortcuts.\(reset)")
print(" \(dim)Run \(reset)\(bold)cmux feedback\(reset)\(dim) to report a bug.\(reset)")
print(" \(subdued)Run \(reset)\(bold)cmux --help\(reset)\(subdued) for all commands.\(reset)")
print(" \(subdued)Run \(reset)\(bold)cmux shortcuts\(reset)\(subdued) to edit shortcuts.\(reset)")
print(" \(subdued)Run \(reset)\(bold)cmux feedback\(reset)\(subdued) to report a bug.\(reset)")
print()
}