No need to fill it out. What you want to apply for is a combination trademark of graphics and text. If you don’t want to set the color now, then apply with a black and white pattern. If the black and white application is successful, you can color the trademark graphic at will later. It should be clear, larger than 5×5 cm and smaller than 10×10 cm, and placed in the picture frame of the application form. The trademark description should be filled in in the format of “text; graphics”. I hope it helps, and I hope you will adopt it.