Hi 娜哇🐸 !
1. Do you want to display tones in colors, instead of numbers (1, 2, 3, etc.)? You specify your preferences in the settings.
2. We are not able to add double slashes in the Pinyin of separable verbs. You will be able to tell which words are separable verbs by looking at the part of speech of a dictionary entry. If it says "sep-v" it means it's a separable verb.
Thank you very much!