Yup, the '89 paint codes and their corresponding names are:
11 Light Titanium Clearcoat
1C Black
2F Currant Red
9L Oxford White
And while I'm at it, here are all the paint codes and names for all the other years too:
1990:
EG Electric Red Clearcoat Metallic
YC Black
YF Light Titanium Clearcoat Metallic
Y0 Oxford White
1991:
Y0 Oxford White
EG Electric Red Clearcoat Metallic
UA Black, Clearcoat Non-Metallic
PA Deep Emerald Green, Clearcoat Metallic
DD Mocha Frost, Clearcoat Metallic
1992 & 1993:
Y0 Oxford White
LA Royal Blue
PA Deep Emerald Green, Clearcoat Metallic
UA Black, Clearcoat Non-Metallic
WH Red Crimson Clearcoat Non-Metallic
YN Silver, Clearcoat Metallic
1994:
KM Moonlight Blue Clearcoat Metallic
PA Deep Emerald Green, Clearcoat Metallic
WH Red Crimson Clearcoat Non-Metallic
WJ Opal frost Clearcoat Metallic
WT Vibrant White Clearcoat
1995:
KM Moonlight Blue Clearcoat Metallic
PA Deep Emerald Green, Clearcoat Metallic
WH Red Crimson Clearcoat Non-Metallic
TS Silver Frost Clearcoat Metallic
WT Vibrant White Clearcoat
1996:
FL Toreador Red Clearcoat Metallic
GK Rose Mist Clearcoat Metallic
KM Moonlight Blue Clearcoat Metallic
SH Medium Willow Green, Clearcoat Metallic
TR Charcoal Grey Clearcoat Metallic
TS Silver Frost Clearcoat Metallic
UC Black Satin Clearcoat
1997:
FL Toreador Red Clearcoat Metallic
PS Pacific Green, Clearcoat Metallic
TS Silver Frost Clearcoat Metallic
UC Black Satin Clearcoat
WT Vibrant White Clearcoat
1998:
FL Toreador Red Clearcoat Metallic
PS Pacific Green, Clearcoat Metallic
TS Silver Frost Clearcoat Metallic
UC Black Satin Clearcoat
WT Vibrant White Clearcoat
1999:
FL Toreador Red Clearcoat Metallic
SU Tropic Green Clearcoat Metallic
TS Silver Frost Clearcoat Metallic
UC Black Satin Clearcoat
WT Vibrant White Clearcoat