Fedora 27, Force RGB Full on startup

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Hi there, I just switched from a WIn10 Desktop to Fedora27. So im totally new to this world. So far i like it alot...im using it as a daily driver for Kodi/Retroarch/Webbrowsing/Office on my old Intel NUC-Kit D54250WYK (INtel HD Graphics 5000) I´d like to set RGB "Full" Range instead of "auomatic". I switched manually via terminal with the command line xrandr --output HDMI-1 --set "Broadcast RGB" "Full" and checked it with /usr/bin/xrandr -q --prop

But i cant figure out for Gods sake how to make that as automatic script on startup. I tryed for days .....searched via google, watched tutorials on youtube....nothing helped me -.- so i gave up and hope someone could help me

thx in advance