Selected color info is not announcing for Custom colors in Albedo colors widow when selected with their Shortcut keys.

Pre-requisites:

1.Open the URL: Releases · Azure/azure-remote-rendering-asset-tool (github.com) and download latest ARRT zip file.

2.Once downloaded the file extract it and open the extracted file.

3.Open 'ARRT' application using Run as administrator.

4.Turn on narrator.

Repro steps:

1. Launch ARRT application using Run as Administrator and Login the ARR and storage accounts with valid credentials(Settings-> Account settings).
2. Navigate to Rendering tab and start the session.(Session-> Start).
3. Expand Model drop down and select load with URL-> Ok, Rendering model will appear on the screen.
4. Select any part of Rendering model, its Material properties will be displayed for the selected rendering model part.
5. Navigate to 'Albedo colors' control in Material properties section and invoke it.
6. Navigate to 'Add to custom color' button and listen to narrator announcement.
7. User shortcut keys 'Ctrl + A' to 'Add to custom colors' and listen to narrator announcement.

Actual Result:

When user navigate to 'Add to custom color' button, narrator is not announcing the shortcut key as 'Alt + A' to add colors to custom colors.

Narrator announces as : 'Add to custom color, button, enter'

When user use 'Alt + A' to add custom colors narrator does not announce the currently  selected color. Narrator announces as 'A'. 

Expected Result:
When user navigate to 'Add to custom color' button, narrator should announce the shortcut keys as 'Alt + A' for 'add to custom colors' button.
For ex- 'Add to custom colors, button, enter, Alt + A'
When user use 'Alt + A' to add custom colors narrator should announce the currently  selected color. Narrator announces as <Color name>, color, selected.