The decision for this particular color
Mushroom can be considered for whole house if its color and depth suit the space; the first design question 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.
Walk the connecting sightlines
Carry one Mushroom board from the brightest room to the connecting hall and the room with the least useful daylight. Leave each room's fixed whites visible. The travertine and undyed wool palette may work in the main space yet fail beside a different upstairs carpet. Inspect both sides of the connecting doorway; a common paint name does not require an identical-looking wall in every exposure.
The Mushroom comparison to make in this room
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 north-facing room assessment covers that related choice. The situations that call for another color covers that related choice.
If Mushroom passes in the main room but fails against another fixed floor, a related color in that space may be more coherent than repeating one formula everywhere. Review both rooms through the connecting doorway. The living-room palette covers that related choice. 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.

