Nintendo Japan Only released 246 title for Famciom disk, there was only two color is orange yellow and blue , and all original Nintendo release disk must got a Nintendo logo on it and with a label . ( see the photo at the right hand side )
This is only 6 title in blue color . all other 240 title are in yellow . if you got your famicom disk in different color / without Nintendo Logo , your Famicom disk are not original .( see the photo at the left side )

Title:                                                                   code         Publisher Release Date
Risa no Yousei Densetsu                       KDS-YOU        Konami         1988.06.21
Famicom Grand Prix II: 3D Hot Rally    FSC-TDRE        Nintendo     1988.04.14
Nakayama Miho no Tokimeki High School  FSC-THSE Nintendo   1987.12.01
Famicom Grand Prix: F1 Race                 FSC-FRGE        Nintendo     1987.10.30
Famicom Golf: US Course                       FSC-GFUE       Nintendo     1987.06.14
Famicom Golf: Japan Course                  FSC-GFJE         Nintendo     1987.02.21