Where can the code be more efficient for checking if an input character is a vowel?

This assembly project reads the key presses and outputs them in a specific color. When a vowel is pressed it changes the color of the text until another vowel is pressed and does so until ESC is pressed. The colors are in a certain pattern which is why I sub colorCode, 8 when it reaches the end of the cycle. I am just looking to make it more efficient. I tried making all the compare statements into one line but wasn't successful.

INCLUDE        Macros.inc
INCLUDE     Irvine32.inc
INCLUDELIB  Irvine32.lib
.386
.STACK 4096
ExitProcess PROTO, dwExitCode:DWORD

.DATA
key       BYTE ?     
colorCode BYTE 5
max       BYTE 13

.CODE
main PROC

FindKey:
mov EAX, 50
call Delay

call ReadKey 
jz FindKey

MOV key, AL 
     cmp key, 75h
     JE UP
     CMP key, 6Fh
     JE UP
     CMP key, 69h
     JE UP
     CMP key, 65h
     JE UP
     CMP key, 61h
     JE UP
     CMP key, 55h
     JE UP
     CMP key, 4Fh
     JE UP
     CMP key, 49h
     JE UP
     CMP key, 45h
     JE UP
     CMP key, 41h
     JE UP
     CMP dx,VK_ESCAPE
     JE OVER

     COLOR:   
          MOVZX EAX, (black * 16) + colorCode
          CALL SetTextColor 
          MOV AL, key
          call WriteChar
          jmp FindKey

          UP: 
               CMP colorCode, 13
               JE RESET
               INC colorCode
               jmp COLOR
               
               RESET:
                    sub colorCode, 8
                    jmp COLOR    
               
     OVER:
     CALL Crlf
     INVOKE ExitProcess, 0
     
main ENDP
END main