Hi Diogo,

Thank you for reaching out to us.

To achieve this, you might need to use custom CSS. Could you let us know what headers you want to change so we can look into this and advise?

We look forward to your reply.

Thanks,

Hello Diogo,

Thanks for writing back.

Do you mean all the heading tags to be in red as shown here :

Please confirm so that we can respond accurately.

I look forward to your response.

Hey Again,

You need to use the Text Editor options to color the text like below. See screenshot: 

Click on Image to View Larger

Thanks.