Keyboard shortcut for changing color in marks

If you read a PDF in reading mode (Cntrl-L) you can press V, for tools, and then U to have the marker on point. However, is there a keyboard shortcut for changing to color. So instead of pressing 'properties' - I don't know if this is the right term since I use the dutch version, and this is a literal translation - you can use Cntrl-x for example. When you use Cntrl-u the words you just colored remain selected, so if you can use a keyboard shortcut to go from the selected word to the table with colors, that would be grandiose for me. Appreciate the help!