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.
Northern Ohio River Region â The counties that are part of the Cincinnati metropolitan area are more commonly known as Northern Kentucky. The rest of the region is part of the locally defined Bluegrass, or sometimes called the Outer Bluegrass.