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.
The placement of TVA's Kentucky Dam on the Tennessee River and the Corps of Engineers' Barkley Dam on the Cumberland River led to the development of associated lakes, and the creation of what is called Land Between the Lakes. A navigation canal located at Grand Rivers, Kentucky, links Kentucky Lake and Lake Barkley.