That can't happen. If a plant exactly matches the cultivar description, it is the cultivar. If it doesn't match then it is not the cultivar, and may be described in it own right and registered. In the example of D. capensis 'Albino' if the description states "colorless glands" then pink glands would set it apart. If the main feature is considered to be a white flower, then the gland color doesn't enter in to the description and if both forms have the white flower, then they are both D. 'Albino'. The person who makes the publication (needed before registering the plant name) determines what the most important elements are to focus on. If I feel that the pink gland variety is worthy, I can register it as D. "Pink Maid" clearly stating the difference in gland color as the main consideration of distinction.