Just because you like a certain colour doesn't mean it looks good on you.
Even though you might prefer one colour over another, that doesn't mean that colour suits you.
ーJust because you like a certain colour doesn't mean it looks good on you.
「その色が好きだからといって、あなたに似合うとは限らない」
Just because you like ... doesn't mean it looks good on you. で「…が好きだからといって、あなたに似合うとは限らない」と表現できます。
ーEven though you might prefer one colour over another, that doesn't mean that colour suits you.
「他の色よりその色が好きかもしれないが、その色があなたに似合うとは限らない」
Even though you might prefer ... over another, that doesn't mean that ... suits you.で「他のより…が好きかもしれないが、その…があなたに似合うとは限らない」と表現できます。
ご参考まで！
Unfortunately, the colors you love don’t always suit you.
Unfortunately, the colors you love don’t always suit you.
Just because you like a color doesn’t mean it will look good on you.
Your favorite color isn’t necessarily your best color.
The color you like and the color that flatters you aren’t always the same.
Sadly, not every color you love will complement your skin tone.
「好き（like/love）＝似合う（suit/ look good on / flatter）とは限らない」
「残念ながら」を入れるなら unfortunately / sadly が自然です。
Your favorite color isn’t necessarily your best color.
は短くて強い定番の言い方です。
カナダ 
アメリカ合衆国 
