Disclaimer: I don’t want to encourage a copy of a commercial design for a number of reasons. That being said, there are interesting considerations here that are important for understanding print process and digital design.
You’ll need something like a Pantone color bridge and a calibrated...
If you make changes to other components to hit the same frequency target, you’ll alter the Q of the filter. Try a 1uF and 470nF cap in parallel to get you there if you don’t have a 1u5 cap.
You could, but you’d change the behavior of the LOW control.
The stock setting is a band pass filter with a center frequency of 86.8Hz. With a 1uF cap, you’d change it to 106.3Hz.
https://www.muzique.com/lab/gyrator.htm