Is this possible to change the background colour of a certain word in a cell?

[makiwara]

I think it's not, because I tried to write a code, but I received an "Object doesn't support this property" or similar error. Any idea? Thank you!

Example: In 1 cell: (It's not allowed in this forum to use background colour, so imagine, that the word colour = background colour

The dog is walking on the street.

 

[Rick Rothstein]

No, you cannot do that.

 

[Fluff]

In short, No.
You can only change the fill colour for the entire cell.