Hello, my name is Rusty. What is the model number of your TV?
Do you also get the pink screen when Roku isn't connected?
That's great! HDMI runs at different speeds, so for Blu-ray and HD, use the back port. The ones on the side are for temporary connections, so the back ones are more reliable. I checked your specs, you're good with 1080P on that display.
You are very welcome. Let me know if you need any help setting up Roku!