Not sure if this is what your looking for but...
/steed 12 162 12 23 Charcoal Steed
/steed 12 62 42 15 Beige Steed
/steed 12 11 42 12 Star Steed
/steed 12 172 125 23 Brown Steed
/steed 12 0 206 206 Crystal Steed
/steed 12 0 206 206 Purple Steed
/steed 12 187 135 201 Spit Fire
/steed 12 62 63 184 Frost Bite
/steed 12 148 156 137 Blaze Hoof Steed
/steed 12 147 156 137 Golden Steed
/steed 12 212 156 137 plaid steed
/steed 12 212 122 166 purple steed
/steed 12 135 237 178 diamond steed
/steed 12 135 211 211 sunset steed
/steed 12 135 211 211 yellow steed
/steed 12 154 136 236 passion steed
/steed 12 212 214 121 Amber steed
/steed 12 124 201 123 cobalt steed
/steed 12 100 0 0 charocal steed
/steed 12 0 200 0 star steed
/steed 12 0 251 124 white steed
/steed 12 251 124 0 maroon steed
/steed 12 251 0 124 coral steed
/steed 12 124 0 251 black steed
/steed 12 50 50 50 beige steed
/steed 12 153 159 32 misty steed
/steed 12 148 1 196 indigo steed
/steed 12 196 1 196 pink steed
/steed 12 1 236 230 crystal steed
/steed 12 230 236 1 kahki steed
/steed 12 230 236 50 moon steed
/steed 12 1 150 150 mortar steed
/steed 12 50 150 150 mount rime
/steed 12 150 50 150 agate steed
/steed 12 150 150 50 mount nightmare
/steed 12 150 100 100 snowy steed
/steed 12 100 100 190 ivory steed
/steed 12 50 200 50 pearl steed
/steed 12 50 50 150 mauve steed
/steed 12 220 220 1 tawny steed
/steed 12 125 1 125 marble steed
/steed 12 125 125 200 paisley steed
/steed 12 50 160 90 emerald steed
/steed 12 142 39 46 zebra
/steed 12 147 134 122 spotted steed
/steed 12 130 40 205 shadow steed
/steed 12 0 206 122 jade steed
/steed 12 90 142 190 pine steed
/steed 12 130 79 186 red steed
/steed 12 105 88 20 Zebra Steed
found these on another forum.