It is associated with joy, sunshine, and tropics.  Orange represents enthusiasm, fascination, happiness, creativity, determination, attraction, success, encouragement, and stimulation.  To the human eyes, orange is seen as a very hot color, so it gives the sensation of heat.
West Virginia, Ohio, Illinois, and Indiana form the northern border  of Kentucky, along the Ohio River.
Kentucky River The 259 miles long Kentucky River joins the Ohio River at Carrollton, KY. The 14 locks and dams on the river mostly were built in the late 19th century and mainly where connecting the coal mine reagions of the Cumberland Mountains with the Ohio River. Only locks 1 through 4 are still operated by the Corps of Engineers.