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feat: neutralize violet-tinted surface greys in the mobile theme

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The dark/light color builders left the Material3 neutral roles (background,
surface, the surfaceContainer ramp, surfaceVariant, outline and the neutral
on-colors) at Material's baseline, which is violet-tinted. That produced a
faint purple wash on backgrounds, cards, dividers and secondary text that did
not follow the user-selected accent.

Replace them with hue-free greys that keep Material's lightness, so contrast is
unchanged while the chrome reads as neutral. Accent-derived roles
(primary/secondary/tertiary and their containers) are untouched and still drive
the themed surfaces.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D1F9jXNwRGTP8qmsV3Wd69
This commit is contained in:
Claude
2026-07-16 20:32:21 +00:00
parent e9f0c601c2
commit ec466d8bc0
1 changed files with 34 additions and 3 deletions
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amethyst/src/main/java/com/vitorpamplona/amethyst/ui/theme/Theme.kt
+34 -3
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@@ -143,10 +143,24 @@ private fun darkColors(accent: AccentColorType): ColorScheme {
onTertiaryContainer = onAccentContainer(secondary, dark = true),
inversePrimary = accentPrimary(accent, dark = false),
surfaceTint = primary,
// Neutral (hue-free) base + surface ramp. Left unset, these fall back to Material's
// violet-tinted baseline greys, which read as a faint purple wash independent of the
// accent. The greys below keep Material's lightness so contrast is unchanged.
background = Color.Black,
onBackground = Color(0xFFE6E6E6),
surface = Color.Black,
onSurface = Color(0xFFE6E6E6),
surfaceVariant = Color(0xFF1E1E1E),
onSurfaceVariant = Color(0xFFCACACA),
surfaceDim = Color.Black,
surfaceVariant = Color(red = 29, green = 26, blue = 34),
surfaceBright = Color(0xFF383838),
surfaceContainerLowest = Color(0xFF141414),
surfaceContainerLow = Color(0xFF1A1A1A),
surfaceContainer = Color(0xFF252525),
surfaceContainerHigh = Color(0xFF2E2E2E),
surfaceContainerHighest = Color(0xFF383838),
outline = Color(0xFF909090),
outlineVariant = Color(0xFF454545),
)
}
@@ -169,8 +183,25 @@ private fun lightColors(accent: AccentColorType): ColorScheme {
onTertiaryContainer = onAccentContainer(secondary, dark = false),
inversePrimary = accentPrimary(accent, dark = true),
surfaceTint = primary,
surfaceContainerHighest = Color(red = 236, green = 230, blue = 240),
surfaceVariant = Color(red = 250, green = 245, blue = 252),
// Neutral (hue-free) base + surface ramp. Left unset, these fall back to Material's
// violet-tinted baseline greys (e.g. surface #FEF7FF), which read as a faint purple wash
// independent of the accent. The greys below keep Material's lightness so contrast is
// unchanged.
background = Color(0xFFFDFDFD),
onBackground = Color(0xFF1C1C1C),
surface = Color(0xFFFDFDFD),
onSurface = Color(0xFF1C1C1C),
surfaceVariant = Color(0xFFFAFAFA),
onSurfaceVariant = Color(0xFF484848),
surfaceDim = Color(0xFFDEDEDE),
surfaceBright = Color(0xFFFDFDFD),
surfaceContainerLowest = Color(0xFFFFFFFF),
surfaceContainerLow = Color(0xFFF7F7F7),
surfaceContainer = Color(0xFFF2F2F2),
surfaceContainerHigh = Color(0xFFECECEC),
surfaceContainerHighest = Color(0xFFEBEBEB),
outline = Color(0xFF767676),
outlineVariant = Color(0xFFCACACA),
)
}