Change the font color of a text field in a table by key-combination

I want to change the font color of a text field in a table (single cell only) on pressing a key combination. Does anybody know how to do this.

I have a lot of data in a table. During an evaluation of the data in a meeting I want to change the color of the text depending on the result of the meeting. (for example: High risk = CTRL+R makes the text red).

I know how to change the color using a button, but I do not want to add a button after each cell. For this reason I would like to do it on a key combination that alway refers to the active cell.

Many thanks for your help in advance.

Marcel