getUserMedia camera image on WebView of Theta V is black and white



I got the camera image of Theta from getUserMedia from WebView at Theta V.
The image displayed on Theta V’s WebView was black and white.
Also, I installed chrome and checked from the site of getusermedia below, but it was similar.

Also, even when using (, Theta V’s video displayed on the remote PC was also black and white.

I would like to extract full-color Theta V images using getUserMedia from WebView.
Because I want to apply the image of getUserMedia with WebRTC API of JS and TensorFlow.js.

Can I get the image of getUserMedia in full color using Theta plugin sdk api?
※I am creating the following cordova plugin.
With this I can use Theta plugin sdk api from WebView.