Gstreamer Pipeline having problems while trying to encode a stream using vaapiencode_h264 plugin

Had this Fixed today ... Was an issue due to unmatching caps in Appsrc...
However, I still have issues of getting a bluish tinge in my video. Image may be NSFW.
Clik here to view.

I am using a Vaapi pipeline SET as below :

Sender side
appsrc name=applicationSource ! videoconvert !
video/x-raw,width=640,format=I420,height=480,framerate=15/1 !
vaapiencode_h264 ! vaapiparse_h264 config-interval=1 ! rtph264pay
config-interval=1 ! gdppay ! tcpserversink host=127.0.0.1 port=5002
sync=false"

Receiver Side:
tcpclientsrc host=<> port=5002 ! gdpdepay ! rtph264depay ! h264parse ! vaapidecode ! vaapisink sync=false

Is there any reason that We are getting a bluish tinge in the video... ??

Thanks,
Varun