$ grep -i olive /usr/X/lib/rgb.txt
85 107 47 dark olive green
85 107 47 DarkOliveGreen
107 142 35 olive drab
107 142 35 OliveDrab
192 255 62 OliveDrab1
179 238 58 OliveDrab2
154 205 50 OliveDrab3
105 139 34 OliveDrab4
202 255 112 DarkOliveGreen1
188 238 104 DarkOliveGreen2
162 205 90 DarkOliveGreen3
110 139 61 DarkOliveGreen4