Made InformationMessageCardView headline background colours customisable (#11)

Author: lojbrooks

CHANGELOG.md

@@ -19,6 +19,9 @@ Allowed headings:
 ### Added
 * screenshot tests
 
+### Changed
+* Made `InformationMessageCardView` headline background colours customisable
+
 ## [3.4.9] - 2020-11-06
 
 ### Added

components/src/main/java/uk/gov/hmrc/components/organism/information/InformationMessageCardView.kt

@@ -135,9 +135,9 @@ class InformationMessageCardView @JvmOverloads constructor(
     }
 
     enum class Type(val headlineBackgroundColor: Int, val headlineTint: Int) {
-        WARNING(R.color.hmrc_yellow, R.color.hmrc_always_black),
-        INFO(R.color.hmrc_blue, R.color.hmrc_white),
-        URGENT(R.color.hmrc_red, R.color.hmrc_white),
-        NOTICE(R.color.hmrc_black, R.color.hmrc_white)
+        WARNING(R.color.hmrc_information_message_warning_headline_background, R.color.hmrc_always_black),
+        INFO(R.color.hmrc_information_message_info_headline_background, R.color.hmrc_white),
+        URGENT(R.color.hmrc_information_message_urgent_headline_background, R.color.hmrc_white),
+        NOTICE(R.color.hmrc_information_message_notice_headline_background, R.color.hmrc_white)
     }
 }

components/src/main/res/values/colors.xml

@@ -43,4 +43,9 @@
     <color name="hmrc_divider">@color/hmrc_grey_2</color>
     <color name="hmrc_inset_bar">@color/hmrc_grey_2</color>
 
+    <color name="hmrc_information_message_warning_headline_background">@color/hmrc_yellow</color>
+    <color name="hmrc_information_message_info_headline_background">@color/hmrc_blue</color>
+    <color name="hmrc_information_message_urgent_headline_background">@color/hmrc_red</color>
+    <color name="hmrc_information_message_notice_headline_background">@color/hmrc_black</color>
+
 </resources>

components/src/main/res/values/public.xml

@@ -20,6 +20,10 @@
     <public name="hmrc_card_background" type="color" />
     <public name="hmrc_divider" type="color" />
     <public name="hmrc_dark_text" type="color" />
+    <public name="hmrc_information_message_warning_headline_background" />
+    <public name="hmrc_information_message_info_headline_background" />
+    <public name="hmrc_information_message_urgent_headline_background" />
+    <public name="hmrc_information_message_notice_headline_background" />
 
     <!-- Styles -->
     <public name="MaterialTextButtonNoInset" type="style" />