diff --git a/packages/remix/lib/src/components/segmented_control/segmented_control_style.dart b/packages/remix/lib/src/components/segmented_control/segmented_control_style.dart
index f5fc62507..0e66e528f 100644
--- a/packages/remix/lib/src/components/segmented_control/segmented_control_style.dart
+++ b/packages/remix/lib/src/components/segmented_control/segmented_control_style.dart
@@ -14,7 +14,7 @@ class SegmentedControlStyle extends SpecStyle<SegmentedControlSpecUtility> {
         ..wrap.intrinsicHeight()
         ..padding.all(4)
         ..borderRadius.all(8)
-        ..color(Colors.black.withValues(alpha: 0.7)),
+        ..color(Colors.black.withOpacity(0.07)),
     ];
 
     final dividerStyle = [
@@ -33,11 +33,11 @@ class SegmentedControlStyle extends SpecStyle<SegmentedControlSpecUtility> {
 
     final itemStyle = [
       $.item.label.chain
-        ..style.color(Colors.black.withValues(alpha: 0.6))
+        ..style.color(Colors.black.withOpacity(0.6))
         ..style.fontSize(14),
       $.item.icon.chain
         ..size(20)
-        ..color(Colors.black.withValues(alpha: 0.6)),
+        ..color(Colors.black.withOpacity(0.6)),
       $.item.container.chain
         ..padding.vertical(6)
         ..padding.horizontal(12)
@@ -45,13 +45,13 @@ class SegmentedControlStyle extends SpecStyle<SegmentedControlSpecUtility> {
       spec.on.selected(
         $.item.container.chain
           ..color.white()
-          ..shadow.color(Colors.black.withValues(alpha: 0.1))
+          ..shadow.color(Colors.black.withOpacity(0.1))
           ..shadow.offset(0, 2)
           ..shadow.spreadRadius(1)
           ..shadow.blurRadius(4),
         $.item.chain
-          ..icon.color(Colors.black.withValues(alpha: 1))
-          ..label.style.color(Colors.black.withValues(alpha: 1)),
+          ..icon.color(Colors.black.withOpacity(1))
+          ..label.style.color(Colors.black.withOpacity(1)),
       ),
     ];
 
diff --git a/packages/remix/lib/src/components/select/select_style.dart b/packages/remix/lib/src/components/select/select_style.dart
index 848ea6fd8..67c283697 100644
--- a/packages/remix/lib/src/components/select/select_style.dart
+++ b/packages/remix/lib/src/components/select/select_style.dart
@@ -27,14 +27,14 @@ class SelectStyle extends SpecStyle<SelectSpecUtility> {
         ..style.fontSize(14)
         ..style.color.black(),
       spec.on.disabled(
-        $.button.container.color(Colors.black.withValues(alpha: 0.05)),
+        $.button.container.color(Colors.black.withOpacity(0.05)),
       ),
     ];
 
     final menuStyle = [
       $.menu.container.chain
         ..borderRadius(6)
-        ..shadow.color(Colors.black.withValues(alpha: 0.07))
+        ..shadow.color(Colors.black.withOpacity(0.07))
         ..shadow.blurRadius(5)
         ..color.white()
         ..border.color.black12()
diff --git a/packages/remix/lib/src/components/spinner/spinner_painter.dart b/packages/remix/lib/src/components/spinner/spinner_painter.dart
index 17e4e3904..6f0c0a39f 100644
--- a/packages/remix/lib/src/components/spinner/spinner_painter.dart
+++ b/packages/remix/lib/src/components/spinner/spinner_painter.dart
@@ -37,7 +37,7 @@ class DottedSpinnerPainter extends SpinnerPainter {
       final angle = i * lineAngle;
       final opacity = (lines - i + animation.value * lines) % lines / lines;
 
-      paint.color = color.withValues(alpha: opacity);
+      paint.color = color.withOpacity(opacity);
 
       final lineHeight = radius * 0.45;
 
@@ -78,7 +78,7 @@ class StrippedSpinnerPainter extends SpinnerPainter {
       final angle = i * lineAngle;
       final opacity = (lines - i + animation.value * lines) % lines / lines;
 
-      paint.color = color.withValues(alpha: opacity);
+      paint.color = color.withOpacity(opacity);
 
       final lineHeight = radius * 0.8;
 
diff --git a/packages/remix/lib/src/themes/fortaleza/components/button_theme.dart b/packages/remix/lib/src/themes/fortaleza/components/button_theme.dart
index f78139eda..b3116a1e4 100644
--- a/packages/remix/lib/src/themes/fortaleza/components/button_theme.dart
+++ b/packages/remix/lib/src/themes/fortaleza/components/button_theme.dart
@@ -43,13 +43,13 @@ class FortalezaButtonStyle extends ButtonStyle {
       return Style.create([
         $.container.color(color),
         spec.on.hover(
-          $.container.color(color.withValues(alpha: 0.8)),
+          $.container.color(color.withOpacity(0.8)),
         ),
         soft(
-          $.container.color(color.withValues(alpha: 0.1)),
+          $.container.color(color.withOpacity(0.1)),
           $.label.style.color(color),
           spec.on.hover(
-            $.container.color(color.withValues(alpha: 0.2)),
+            $.container.color(color.withOpacity(0.2)),
           ),
           spec.on.disabled(
             disabled(),
@@ -68,11 +68,11 @@ class FortalezaButtonStyle extends ButtonStyle {
           ),
         ),
         surface(
-          $.container.color(color.withValues(alpha: 0.1)),
-          $.container.border.color(color.withValues(alpha: 0.7)),
+          $.container.color(color.withOpacity(0.1)),
+          $.container.border.color(color.withOpacity(0.7)),
           $.label.style.color(color),
           spec.on.hover(
-            $.container.color(color.withValues(alpha: 0.2)),
+            $.container.color(color.withOpacity(0.2)),
             $.container.border.color.withOpacity(0.8),
           ),
           spec.on.disabled(