I want to filter by colour code once I have already filtered the results by date. Is this possible?
Sure, add the Color Class filter onto your Filter stack and choose the colors you want. You can click the '+' button to add a new filter and then change it to a Color Class filter, or you can click on the popup of the last filter in the stack then hold down the Modifier key (Shift on Windows, Option on macOS) and choose "Color Class" from the popup menu and it will create one directly. Then select your colors.
-Kirk
