A tone equalizer in darktable ?

Software darktable
48

sorry, I forgot to add that the raw is available from here, if you want to use it for testing:

https://pixls-discuss.s3.dualstack.us-east-1.amazonaws.com/original/3X/6/7/67a3e8c83b2070acdeeacc78fcc5a0f9f0e3ff77.RW2

taken from this post: Local Lab build - #659 by spidermonkey