Anyone else having issues with pasting images into Sketch, and them appearing washed out?

UPD: fixed by following these instructions: https://www.sketchapp.com/support/troubleshooting/gamma-fix-high-sierra

I also recommend https://github.com/Volorf/Sparkliner — quickly create graphs from .json files & https://github.com/bomberstudios/Cleanup-Useless-Groups — clean up your layer list by removing empty groups and flattening deeply nested groups.