Today, customizing microphone button, means:

• Cloning BasicSendBox.js, point the microphone button to a new one

• Cloning BasicWebChat.js, and point it to newer BasicSendBox.js

• Using new BasicWebChat.js in the hosting page

• Putting a new send box inside the activity

  • Probably, the activity which render send box will need to host their own <SendBoxComposer>
  • Probably, some hooks will need to run under <SendBoxComposer>

• includes customizing the localizable strings and providing your own verbiage across the app - original request is for the "Type your message" text

Do some studies to understand how difficult it is to customize send box, for example, continuing the work on "remaining characters" sample.