diff --git a/src/term.c b/src/term.c
index ba2d473..aecdadf 100644
--- a/src/term.c
+++ b/src/term.c
@@ -6086,6 +6086,8 @@
 	guicolor_T  color;
     };
 
+    /* Only non X11 colors (not present in rgb.txt) and colors in
+     * color_names[], useful when $VIMRUNTIME is not found,. */
     static struct rgbcolor_table_S rgb_table[] = {
 	    {(char_u *)"black",		RGB(0x00, 0x00, 0x00)},
 	    {(char_u *)"blue",		RGB(0x00, 0x00, 0xFF)},
@@ -6100,26 +6102,8 @@
 	    {(char_u *)"darkred",	RGB(0x8B, 0x00, 0x00)},
 	    {(char_u *)"darkyellow",	RGB(0x8B, 0x8B, 0x00)}, /* No X11 */
 	    {(char_u *)"gray",		RGB(0xBE, 0xBE, 0xBE)},
-	    {(char_u *)"gray10",	RGB(0x1A, 0x1A, 0x1A)},
-	    {(char_u *)"gray20",	RGB(0x33, 0x33, 0x33)},
-	    {(char_u *)"gray30",	RGB(0x4D, 0x4D, 0x4D)},
-	    {(char_u *)"gray40",	RGB(0x66, 0x66, 0x66)},
-	    {(char_u *)"gray50",	RGB(0x7F, 0x7F, 0x7F)},
-	    {(char_u *)"gray60",	RGB(0x99, 0x99, 0x99)},
-	    {(char_u *)"gray70",	RGB(0xB3, 0xB3, 0xB3)},
-	    {(char_u *)"gray80",	RGB(0xCC, 0xCC, 0xCC)},
-	    {(char_u *)"gray90",	RGB(0xE5, 0xE5, 0xE5)},
 	    {(char_u *)"green",		RGB(0x00, 0xFF, 0x00)},
 	    {(char_u *)"grey",		RGB(0xBE, 0xBE, 0xBE)},
-	    {(char_u *)"grey10",	RGB(0x1A, 0x1A, 0x1A)},
-	    {(char_u *)"grey20",	RGB(0x33, 0x33, 0x33)},
-	    {(char_u *)"grey30",	RGB(0x4D, 0x4D, 0x4D)},
-	    {(char_u *)"grey40",	RGB(0x66, 0x66, 0x66)},
-	    {(char_u *)"grey50",	RGB(0x7F, 0x7F, 0x7F)},
-	    {(char_u *)"grey60",	RGB(0x99, 0x99, 0x99)},
-	    {(char_u *)"grey70",	RGB(0xB3, 0xB3, 0xB3)},
-	    {(char_u *)"grey80",	RGB(0xCC, 0xCC, 0xCC)},
-	    {(char_u *)"grey90",	RGB(0xE5, 0xE5, 0xE5)},
 	    {(char_u *)"lightblue",	RGB(0xAD, 0xD8, 0xE6)},
 	    {(char_u *)"lightcyan",	RGB(0xE0, 0xFF, 0xFF)},
 	    {(char_u *)"lightgray",	RGB(0xD3, 0xD3, 0xD3)},
@@ -6129,16 +6113,13 @@
 	    {(char_u *)"lightred",	RGB(0xFF, 0x8B, 0x8B)}, /* No X11 */
 	    {(char_u *)"lightyellow",	RGB(0xFF, 0xFF, 0xE0)},
 	    {(char_u *)"magenta",	RGB(0xFF, 0x00, 0xFF)},
-	    {(char_u *)"orange",	RGB(0xFF, 0xA5, 0x00)},
-	    {(char_u *)"purple",	RGB(0xA0, 0x20, 0xF0)},
 	    {(char_u *)"red",		RGB(0xFF, 0x00, 0x00)},
-	    {(char_u *)"seagreen",	RGB(0x2E, 0x8B, 0x57)},
-	    {(char_u *)"slateblue",	RGB(0x6A, 0x5A, 0xCD)},
-	    {(char_u *)"violet",	RGB(0xEE, 0x82, 0xEE)},
 	    {(char_u *)"white",		RGB(0xFF, 0xFF, 0xFF)},
 	    {(char_u *)"yellow",	RGB(0xFF, 0xFF, 0x00)},
     };
 
+    static struct rgbcolor_table_S *colornames_table;
+    static int size = 0;
 
     if (name[0] == '#' && STRLEN(name) == 7)
     {
@@ -6159,44 +6140,75 @@
     /*
      * Last attempt. Look in the file "$VIM/rgb.txt".
      */
-
-    fname = expand_env_save((char_u *)"$VIMRUNTIME/rgb.txt");
-    if (fname == NULL)
-	return INVALCOLOR;
-
-    fd = fopen((char *)fname, "rt");
-    vim_free(fname);
-    if (fd == NULL)
+    if (size == 0)
     {
-	if (p_verbose > 1)
-	    verb_msg((char_u *)_("Cannot open $VIMRUNTIME/rgb.txt"));
-	return INVALCOLOR;
-    }
+	int counting;
 
-    while (!feof(fd))
-    {
-	size_t		len;
-	int		pos;
+	/* colornames_table not yet initialized */
+	fname = expand_env_save((char_u *)"$VIMRUNTIME/rgb.txt");
+	if (fname == NULL)
+	    return INVALCOLOR;
 
-	ignoredp = fgets(line, LINE_LEN, fd);
-	len = strlen(line);
-
-	if (len <= 1 || line[len - 1] != '\n')
-	    continue;
-
-	line[len - 1] = '\0';
-
-	i = sscanf(line, "%d %d %d %n", &r, &g, &b, &pos);
-	if (i != 3)
-	    continue;
-
-	if (STRICMP(line + pos, name) == 0)
+	fd = fopen((char *)fname, "rt");
+	vim_free(fname);
+	if (fd == NULL)
 	{
-	    fclose(fd);
-	    return (guicolor_T)RGB(r, g, b);
+	    if (p_verbose > 1)
+		verb_msg((char_u *)_("Cannot open $VIMRUNTIME/rgb.txt"));
+	    return INVALCOLOR;
 	}
+
+	for (counting = 1; counting >= 0; --counting)
+	{
+	    if (!counting)
+	    {
+		colornames_table = (struct rgbcolor_table_S *)alloc(
+			   (unsigned)(sizeof(struct rgbcolor_table_S) * size));
+		if (colornames_table == NULL)
+		{
+		    fclose(fd);
+		    return INVALCOLOR;
+		}
+		rewind(fd);
+	    }
+	    size = 0;
+
+	    while (!feof(fd))
+	    {
+		size_t	len;
+		int	pos;
+
+		ignoredp = fgets(line, LINE_LEN, fd);
+		len = strlen(line);
+
+		if (len <= 1 || line[len - 1] != '\n')
+		    continue;
+
+		line[len - 1] = '\0';
+
+		i = sscanf(line, "%d %d %d %n", &r, &g, &b, &pos);
+		if (i != 3)
+		    continue;
+
+		if (!counting)
+		{
+		    char_u *s = vim_strsave((char_u *)line + pos);
+
+		    if (s == NULL)
+			return INVALCOLOR;
+		    colornames_table[size].color_name = s;
+		    colornames_table[size].color = (guicolor_T)RGB(r, g, b);
+		}
+		size++;
+	    }
+	}
+	fclose(fd);
     }
-    fclose(fd);
+
+    for (i = 0; i < size; i++)
+	if (STRICMP(name, colornames_table[i].color_name) == 0)
+	    return colornames_table[i].color;
+
     return INVALCOLOR;
 }
 #endif