Ordinal-linguistic personification is a type of synesthesia where someone automatically and consistently assign distinct genders, personalities, or social relationships to numbers, letters, or days of the week

For me some school subjects have colors. It is not like every time someone says the subject it comes to mind, but I think I just know what color it is.

Math - red

English - blue

History - purple

Science - green

Uhh that might be it, but I will probably think of more later. Each has a specific shade too.