Changes unread marker in item_room.xml

[ericdecanini]

Type of change

• Feature
• Bugfix
• Technical
• Other : Misc

Content

• Unread marker colour changed from colorSecondary (green) to vctr_content_secondary (grey)

Motivation and context

iOS already uses this grey colour and we want to have parity with them

Screenshots / GIFs

	Before	After
Light
Dark

Tests

Go to Rooms tab
See that marker for rooms with unread messages is grey

Tested devices

• Physical
• Emulator
• OS version(s): Android 10

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[github-actions]

Matrix SDK

Integration Tests Results:

• [org.matrix.android.sdk.session]
  passed=
• [org.matrix.android.sdk.account]
  passed=
• [org.matrix.android.sdk.internal]
  passed=
• [org.matrix.android.sdk.ordering]
  passed=
• [org.matrix.android.sdk.PermalinkParserTest]
  passed=

[github-actions]

Unit Test Results

  84 files  ±0    84 suites  ±0   59s ⏱️ -1s
157 tests ±0  157 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
504 runs  ±0  504 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit ff0b0f2. ± Comparison against base commit 116f7d0.

[bmarty]

Thanks!

[bmarty]

Linked issue: #4639 (next time please add it to the PR description, thanks!)

[frandavid100]

I'm sorry, but why not use a small grey dot at the right side like Element Web does?