Define a reason to reject the sample
Skip Mushroom when its color character or depth conflicts with a fixed finish you plan to keep. The main issue to resolve here is a mushroom neutral judged against real stone. Mushroom SW-9587 is much lighter than Moth Wing, though its name alone cannot settle whether a room will read it as beige or taupe.
Travertine and undyed wool give a material-led way to assess the authentic sample without inventing an undertone from the screen chip.
The material conflict matters more than popularity
For a palette involving travertine and undyed wool, place the paint against the permanent material that is hardest to change. If that join looks wrong in the lighting used most often, do not let a flattering isolated chip overrule it. A scheme can be attractive in another house and unsuitable for the particular countertop, floor or cabinet finish already installed here.
Mushroom has an LRV of 57; Sherwin-Williams Shiitake SW-9173 is 51. The difference is 6 points, with Mushroom returning more light under the reference measurement.
The condition for keeping Mushroom
Compare the actual sample to the stone's background color before labeling it taupe, beige or gray in your scheme. The physical-sample checklist covers that related choice.
If making Mushroom work requires replacing materials you intended to keep, revise the paint shortlist first. A successful sample should resolve the room brief, not expand the renovation without a clear reason. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Mushroom SW-9587. The recorded LRV is 57. Named comparison values come from the respective manufacturers; material schemes are editorial suggestions.
This guide reviews published color information and proposes practical sample checks. It does not claim first-hand paint testing or customer-review scores. Sherwin-Williams does not sponsor or endorse this site. Product names and trademarks belong to their respective owners. Confirm the color in a physical sample and select the coating for the actual surface and finish.

