Click the kana character to show or hide what it is.

Green for A - as in mop - with little or no rounding of the lips
Blue for I - as in tree - like a long 'e' sound, only shorter
Red for U - as in boot - with a slight rounding of the lips
Purple for E - as in left - with little or no rounding of the lips
Orange for O - as in tow - like a long 'o' sound, only shorter