Asking all patches to set the same random color

I want to ask patches to set their pcolor to random 8 + 30 for a different shade of brown, but I would like all of the patches to have the same pcolor. Is this possible?

I have ask patches with [pcolor = 135] [set pcolor random 8 + 30] so far but i dont know how to give them all the same color, as they get different random colors. Thanks in advance!