I recently had my colours done and found I am now a "dusky warm light". Luckily many of the fabrics I've collected are in this palette. However a few are on the brighter rather than duskier side of warm, such as this mesh with bursts of white and bright green amongst the dusky background. In this instance I only needed a subtle change, so tried coffee.
That fabric with warm bright colours can be transformed into warm dusky hues using coffee.
Test sample using a corner of fabric submerged in strong espresso coffee undiluted for 20 minutes.
Happy with this I submerged the full length in a double shot (over run each time to extract all colour from the coffee). Despite my optimism this wasn't enough voume so I added water until the fabric was covered (diluting the coffee) and let it soak longer (for 30 minutes).
This technique worked quite well in reducing the brightness of colours without significantly darkening them, the effect is subtle, but visible when compared with the original print and imbues warm light tones on white areas.