refactor: simplify fabric template

packages/create-react-native-library/templates/kotlin-view-new/android/src/main/java/com/{%- project.package_dir %}/{%- project.name %}ViewManager.kt

@@ -31,8 +31,8 @@ class <%- project.name -%>ViewManager : SimpleViewManager<<%- project.name -%>Vi
   }
 
   @ReactProp(name = "color")
-  override fun setColor(view: <%- project.name -%>View?, color: String?) {
-    view?.setBackgroundColor(Color.parseColor(color))
+  override fun setColor(view: <%- project.name -%>View?, color: Int?) {
+    view?.setBackgroundColor(color ?: Color.TRANSPARENT)
   }
 
   companion object {

packages/create-react-native-library/templates/native-view-new/src/{%- project.name %}ViewNativeComponent.ts

@@ -1,7 +1,11 @@
-import { codegenNativeComponent, type ViewProps } from 'react-native';
+import {
+  codegenNativeComponent,
+  type ColorValue,
+  type ViewProps,
+} from 'react-native';
 
 interface NativeProps extends ViewProps {
-  color?: string;
+  color?: ColorValue;
 }
 
 export default codegenNativeComponent<NativeProps>('<%- project.name -%>View');

packages/create-react-native-library/templates/nitro-view/android/src/main/java/com/margelo/nitro/{%- project.package_dir %}/{%- project.name %}.kt

@@ -8,10 +8,8 @@ import androidx.core.graphics.toColorInt
 @DoNotStrip
 class Hybrid<%- project.name %>(val context: ThemedReactContext) : Hybrid<%- project.name %>Spec() {
 
-  // View
   override val view: View = View(context)
 
-  // Props
   private var _color = "#000"
   override var color: String
       get() = _color

packages/create-react-native-library/templates/objc-view-new/ios/{%- project.name %}View.mm

@@ -1,18 +1,15 @@
 #import "<%- project.name -%>View.h"
 
+#import <React/RCTConversions.h>
+
 #import <react/renderer/components/<%- project.name -%>ViewSpec/ComponentDescriptors.h>
-#import <react/renderer/components/<%- project.name -%>ViewSpec/EventEmitters.h>
 #import <react/renderer/components/<%- project.name -%>ViewSpec/Props.h>
 #import <react/renderer/components/<%- project.name -%>ViewSpec/RCTComponentViewHelpers.h>
 
 #import "RCTFabricComponentsPlugins.h"
 
 using namespace facebook::react;
 
-@interface <%- project.name -%>View () <RCT<%- project.name -%>ViewViewProtocol>
-
-@end
-
 @implementation <%- project.name -%>View {
     UIView * _view;
 }
@@ -42,30 +39,10 @@ - (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &
     const auto &newViewProps = *std::static_pointer_cast<<%- project.name -%>ViewProps const>(props);
 
     if (oldViewProps.color != newViewProps.color) {
-        NSString * colorToConvert = [[NSString alloc] initWithUTF8String: newViewProps.color.c_str()];
-        [_view setBackgroundColor:[self hexStringToColor:colorToConvert]];
+        [_view setBackgroundColor: RCTUIColorFromSharedColor(newViewProps.color)];
     }
 
     [super updateProps:props oldProps:oldProps];
 }
 
-Class<RCTComponentViewProtocol> <%- project.name -%>ViewCls(void)
-{
-    return <%- project.name -%>View.class;
-}
-
-- hexStringToColor:(NSString *)stringToConvert
-{
-    NSString *noHashString = [stringToConvert stringByReplacingOccurrencesOfString:@"#" withString:@""];
-    NSScanner *stringScanner = [NSScanner scannerWithString:noHashString];
-
-    unsigned hex;
-    if (![stringScanner scanHexInt:&hex]) return nil;
-    int r = (hex >> 16) & 0xFF;
-    int g = (hex >> 8) & 0xFF;
-    int b = (hex) & 0xFF;
-
-    return [UIColor colorWithRed:r / 255.0f green:g / 255.0f blue:b / 255.0f alpha:1.0f];
-}
-
 @end