The intent behind a letter could easily be deciphered by the colour of the wax seal.
A Ruby Seal signified a message between engaged lovers. 
A Red Seal signified a business or formal letter. 
A Light Red Seal signified a happy lover or valentine. 
A Rose Seal signified a message between girls. 
A Pink Seal signified praise and congratulations. 
A Blue Seal signified romance and passion. 
A Sky Blue Seal signified constancy or commitment. 
A Violet Seal signified condolences or sympathy. |
A Chocolate Brown Seal signified a dinner invitation. 
A Brown Seal signified displeasure or refusal. 
A Green Seal signified a friendly or hopeful message. Like a message from a hopeful lover. One did not want to see a brown seal on the return message. 
A Pale Green Seal signified a reproach. 
A Yellow Seal signified jealousy or spurned adorers. 
A Black Seal signified death notices or mourning. 
A Gray Seal signified friendship. 
A White Seal signified a formal message such as a wedding invitation, or occasionally for a death, funeral, or melancholy. |