1.) Faster: do something like:

nRGB = 12632256 &&RGB(192,192,192)
with thisform
? Seconds()
for i = 1 to 10000
STORE nRGB TO .optSecSold.Option1.DisabledBackColor, ;
and_all_other_properties
endfor
? seconds()
for i = 1 to 10000
.optSecSold.Option1.DisabledBackColor = nRGB
endfor
? seconds()
EndWith

2.) RGB() is slow. If you can avoid it, use the numeric value instead of the function.

Joerg Karpa