how to change the color of my ascii art in emu8086?

Question

I created a simple project for my assignment and the only thing left is to change the color of the frog ASCII art (which is named "Frog") into green and I don't know how to do so. This is my code:

mov ax, data
mov ds, ax
mov es, ax
            
; Display name
mov dx, offset Jas
mov ah, 09h
int 21h

; Display frog
mov dx, offset Frog
mov ah, 09h
int 21h
                  
mov ax, 4C00h
int 21h