The add-on "Autoprofit" will help a lot with this by automatically vendoring all gray items in your inventory.
More important, a gray market item - easily identified by these alterations as well as by its serial number -is not covered by any warranty.
This implies that in the Lien et al. (2010) study with only four elements, of which two were considered "singletons" (e.g., a red and a green item among two gray items), the singletons may not have been salient enough for pop-out search, causing selection to be slow and serial.
The search displays consisted of 12 dark gray items (1.0 cd/m; one target and 11 distractors) presented against a light gray background (25.4 cd/m).
Visiting the store at Wembley one day, I came across an interesting item: a black half-moon of polypropylene, with a gray beanbag-ish underbelly.
It is a gray area that will most likely not favor the purchase of virtual PSU items.
We filled the chest with 20 items from Goodwill, mostly grown-man attire: ties, button-down shirts, a gray pageboy cap and a suit vest.
Other items include a white leather Le Corbusier club chair, now $2,295, and a gray sofa from "Guiding Light," now $599.
A gray line (0.3°×1.5°) that could be randomly oriented either vertically or horizontally was presented in the center of each item.
Two colored items were embedded in an array of gray filler items and we varied the separation between the colored items, one the target and the other a decoy.
