The colorful rose motif is intentionally "misused" here, in order to show how the Black and White Filter works. Depending on the adjustment of the filter slider, color tones can be intensified or weakened. In this way, color photos can also be creatively modified as black-and-white photos.

Hint: this software filter has the same effect in black-and-white photography. It brightens the selected filter color in the picture and makes the complementary color darker.