I went to the antennaweb site and got this info....
* yellow - uhf KCKA-DT 19 PBS CENTRALIA WA TBD 182° 13.9 19
green - uhf KCKA 15 PBS CENTRALIA WA 182° 13.9 15
blue - uhf K53AZ 53 CBS CENTRALIA, ETC. WA 183° 13.5 53
blue - uhf K42CM 42 FOX CENTRALIA, ETC. WA 182° 13.9 42
blue...