The leaf colour of lettuce is described with five characteristics. So far, three of them have been used in the TQ, but a fourth has recently been added. For varieties with anthocyanin, you must now also indicate how large the area covered with anthocyanin is (characteristic 13).
Only if that surface is not that large (score 6 or less), you do have to describe the green colour (characteristics 14 and 15). Otherwise, enter "not applicable". If you use online registration (via the CPVO tool) you will automatically be directed to the questions that match green or predominantly red leaves.