[Closed] Random colors point3

[size=1][size=2]I have a color picker used to set the Diffuse of a selected object .but I not sure how I go about making my point3 value “cour” a random number .heres a very cut down biy of my code can someone tell me how it should be done , I get an error whenI run with what I have so far .
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 on onColour changed onColour do (cour = onColour) 
 
if rando.checked do ( 
ranred = random 0 255 
rangre = random 0 255 
ranblu = random 0 255 
cour.x = ranred 
cour.y = rangre 
cour.z = ranblu 
) 
meditMaterials[24].materialList[noteval].Diffuse = cour