Consider

Classic Era (added 1999-2000)

The /consider command (or in most cases, right clicking) gives basic information about the relative experience level and faction standing of an NPC. It's a very important habit for newer players to /consider every NPC they engage in combat, especially early on when monsters vary considerably in difficulty and are mixed in placement.

For information about faction, see Faction.

In classic Everquest, only green, blue, white, yellow and red colors were implemented. Other colors like light blue were available in later expansions.

Consider color scales by level

Character Levels 1 - 6

-4 and below GREEN - looks like a reasonably safe opponent
-1 to -3 BLUE - looks like you would have the upper hand
0 WHITE - looks like an even fight
+1 and +2 YELLOW - looks like quite a gamble
+3 and up RED - what would you like your tombstone to say?

Character Levels 7 - 8

-4 and below GREEN - looks like a reasonably safe opponent.
-1 to -3 BLUE - looks kind of risky, but you might win.
0, WHITE - looks kind of risky..you might win.
+1 and +2 YELLOW - looks like quite a gamble.
+3 and up RED - what would you like your tombstone to say?

Character Levels 9 - 12

-6 and below GREEN - looks like a reasonably safe opponent.
-4 and -5 GREEN - looks like you would have the upper hand.
-1 to -3 BLUE - looks kind of risky, but you might win.
0, WHITE - looks kind of risky..you might win.
+1 and +2 YELLOW - looks like quite a gamble.
+3 and up RED - what would you like your tombstone to say?

Character Levels 13 - 14

-7 and below GREEN - looks like a reasonably safe opponent.
-6 GREEN - looks like you would have the upper hand.
-4 and -5 BLUE - looks like you would have the upper hand.
-1 to -3 BLUE - looks kind of risky, but you might win.
0, WHITE - looks kind of risky..you might win.
+1 and +2 YELLOW - looks like quite a gamble.
+3 and up RED - what would you like your tombstone to say?

Character Levels 15 - 24

-8 or less, GREEN - looks like a reasonably safe opponent.
-6 and -7, GREEN - You would probably win this fight..it's not certain though.
-3 to -5, BLUE - looks quite risky, but might be worth a try.
-1 and -2 - BLUE - looks kind of dangerous.
0, WHITE - appears to be quite formidable.
+1 and +2, YELLOW - looks like quite a gamble.
+3 or more, RED - what would you like your tombstone to say?

Character Levels 25 - 32

-11 or more, GREEN- You could probably win this fight.
-10, GREEN - This creature could pose problems, you would probably defeat it.
-8 and -9, GREEN - You would probably win this fight..it's not certain though.
-1 to -7, BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Character Levels 33 - 40

-11 or more, GREEN - you could probably win this fight.
-11, GREEN - You would probably win this fight..it's not certain though.
-1 to -10, BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Character levels 41 - 44?

-12 or more, GREEN - you could probably win this fight.
-1 to -11, BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Character levels 45 - 48
This is not accurate, a level 36 mob was "light" green to a level 46 character. Should be blue based on this list.
-13 or more, GREEN - you could probably win this fight.
-1 to -12, BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Character Level 49 - 52

-14 or more, GREEN - you could probably win this fight.
-1 to -13,BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Character Level 60

-21 or more, LIGHT GREEN - you could probably win this fight.
-16 to -20, DARK GREEN - you would probably win this fight..it's not certain though.
-1 to -15, BLUE - appears to be quite formidable.
0, WHITE - looks like quite a gamble.
+1 and +2, YELLOW - looks like it would wipe the floor with you!
+3 or more, RED - what would you like your tombstone to say?

Table

Level	Red	Yellow	Blue	Teal	Green
1	4+	2 - 3
2	5+	3 - 4	1
3	6+	4 - 5	1 - 2
4	7+	5 - 6	1 - 3
5	8+	6 - 7	2 - 4		1
6	9+	7 - 8	3 - 5		1 - 2
7	10+	8 - 9	4 - 6		1 - 3
8	11+	9 - 10	5 - 7		1 - 4
9	12+	10 - 11	6 - 8	4 - 5	1 - 4