color picker accepts rgb format

src/demos/colorpicker/colorpicker-template-driven-demo.component.ts

@@ -12,7 +12,7 @@ import {
 })
 export class SkyColorpickerTemplateDrivenDemoComponent {
   public model: any = {
-    favoriteColor: '#00f'
+    favoriteColor: 'rgb(0, 0, 225)'
   };
 
   public swatches = [

src/modules/colorpicker/colorpicker.component.spec.ts

@@ -187,6 +187,21 @@ describe('Colorpicker Component', () => {
     verifyColorpicker(nativeElement, '#fff', '255, 255, 255');
   }));
 
+  it('should handle RGB initial color', fakeAsync(() => {
+    fixture.detectChanges();
+    fixture.destroy();
+
+    fixture = TestBed.createComponent(ColorpickerTestComponent);
+    nativeElement = fixture.nativeElement as HTMLElement;
+    component = fixture.componentInstance;
+
+    component.selectedOutputFormat = 'rgba';
+    component.selectedColor = 'rgb(0,0,255)';
+
+    openColorpicker(nativeElement, fixture);
+    verifyColorpicker(nativeElement, 'rgba(0,0,255,1)', '0, 0, 255');
+  }));
+
   it('should output HEX', fakeAsync(() => {
     component.selectedOutputFormat = 'hex';
     openColorpicker(nativeElement, fixture);

src/modules/colorpicker/colorpicker.service.ts

@@ -106,7 +106,7 @@ export class SkyColorpickerService {
     const hue = hsva.hue;
     const saturation = hsva.saturation;
     const value = hsva.value;
-    const alpha = hsva.alpha;
+    const alpha = hsva.alpha || hsva.alpha === 0 ? hsva.alpha : 1;
     const i = Math.floor(hue * 6);
     const f = hue * 6 - i;
     const p = value * (1 - saturation);