refactor: remove redundant color attributes and improve color contrast handling

feature/onboarding/src/commonMain/kotlin/bzh/ajaury/chombev/onboarding/ui/components/OnboardingInfoPage.kt

@@ -46,7 +46,6 @@ fun OnboardingInfoPage(
         Text(
             text = description,
             style = MaterialTheme.typography.bodyLarge,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
             textAlign = TextAlign.Center,
         )
     }

feature/onboarding/src/commonMain/kotlin/bzh/ajaury/chombev/onboarding/ui/components/OnboardingLevelPage.kt

@@ -51,7 +51,6 @@ fun OnboardingLevelPage(
         Text(
             text = stringResource(Res.string.onboarding_level_description),
             style = MaterialTheme.typography.bodyMedium,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
             textAlign = TextAlign.Center,
         )
         LevelOption(
@@ -110,7 +109,6 @@ private fun LevelOption(
                 Text(
                     text = description,
                     style = MaterialTheme.typography.bodySmall,
-                    color = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
             }
         }

feature/onboarding/src/commonMain/kotlin/bzh/ajaury/chombev/onboarding/ui/components/OnboardingPageIndicator.kt

@@ -32,7 +32,7 @@ fun OnboardingPageIndicator(
                         if (index == currentPage) {
                             MaterialTheme.colorScheme.primary
                         } else {
-                            MaterialTheme.colorScheme.surfaceVariant
+                            MaterialTheme.colorScheme.onBackground
                         },
                     ),
             )

feature/records/src/commonMain/kotlin/bzh/ajaury/chombev/player/ui/PlayerScreen.kt

@@ -241,7 +241,6 @@ private fun PlayerTopBar(
                             Text(
                                 text = translation,
                                 style = MaterialTheme.typography.titleSmall,
-                                color = MaterialTheme.colorScheme.onSurfaceVariant,
                                 maxLines = 1,
                                 overflow = TextOverflow.Ellipsis,
                             )

feature/records/src/commonMain/kotlin/bzh/ajaury/chombev/player/ui/components/LabeledSlider.kt

@@ -10,6 +10,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.semantics.ProgressBarRangeInfo
 import androidx.compose.ui.semantics.clearAndSetSemantics
 import androidx.compose.ui.semantics.contentDescription
@@ -69,13 +70,12 @@ fun LabeledSlider(
             Text(
                 text = title,
                 style = MaterialTheme.typography.titleMedium,
-                color = MaterialTheme.colorScheme.onSurface.copy(alpha = contentAlpha),
-                modifier = Modifier.weight(1f),
+                modifier = Modifier.weight(1f).alpha(contentAlpha),
             )
             Text(
+                modifier = Modifier.alpha(contentAlpha),
                 text = valueLabel,
-                style = MaterialTheme.typography.titleMedium,
-                color = MaterialTheme.colorScheme.primary.copy(alpha = contentAlpha),
+                style = MaterialTheme.typography.labelLarge,
                 maxLines = 1,
                 softWrap = false,
             )

feature/records/src/commonMain/kotlin/bzh/ajaury/chombev/preferences/ui/PreferenceToggle.kt

@@ -51,7 +51,6 @@ fun PreferenceToggle(
             Text(
                 text = subtitle,
                 style = MaterialTheme.typography.bodySmall,
-                color = MaterialTheme.colorScheme.onSurfaceVariant,
             )
         }
 

feature/records/src/commonMain/kotlin/bzh/ajaury/chombev/records/ui/RecordView.kt

@@ -60,7 +60,6 @@ fun RecordView(
                 Text(
                     text = translation,
                     style = MaterialTheme.typography.bodySmall,
-                    color = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
             }
         }