Makro for selecting all objects with a specific colour

Can anyone make me a macro which automatically selects all objects with a specifig RGB colour?

This is the colour:
R 108
G 133
B 184

#6C85B8

(I can use the search and replace function and save and load it... but  just clicking on a makro would make it a lot easier and faster for me)

Thanks!

Roelli.