Restoring red stitching color
 

I've been pretty diligent about keeping the leather parts of my BRZ wiped with conditioner and after 70k of use, the seats and steering wheel have been fairly good apart from being shiny than matte.

My concern is how the stitching is getting darker over time.

Does anyone have cleaning advice for those things? I'd imagine if i took a bristle brush and soapy woder on it I could accidentally fray the stitching.

I've managed to brighten it up a little by cleaning the stitching with some interior cleaner and with a damp microfiber, going in the direction of the stitch in order to not loosen/fray it.

What specific interior cleaner if I may ask?

Sonax Interior Cleaner - the spray type.