Acer has released a new firmware for the X27 that allows
users to select sRGB gamma or the YUV gamma when using YUV color format. At
this time, the firmware update is available by sending the monitor to a local
service center for the update. If you want to update the firmware yourself, you
can wait until later this year when a downloadable utility will be available.
We have published a support article on this topic at: https://us.answers.acer.com/app/answers/detail/a_id/56278.