White  - Master the first 18 letters of the Aleph Bet.
Red  - Master all 32 letters of the Aleph Bet.
Orange  - Master the first 3 vowels with letter combinations.
Yellow  - Master the first 6 vowels with letter combinations.
Green - Master the first 9 vowels with letter combinations.
Blue  - Master all the vowels and exceptions to the rules.
Purple  - Master reading basic prayers.
Brown  - Master reading higher level Tefillot.
Gray - Master reading from the Siddur in a timed fashion.
Black  - Master reading over 100 words in a minute.