Been having a great deal of success lately using the most simple three word question as an opener on tinder. Girls reply 90% of the time (sometimes just one word, though). Ask them "pink or purple?" It's so simple yet so effective because you can basically deduce which type of girl they were as a kid, either the super girly-total drama queen (pink) or if they were more of an emotional keep to themselves kind of girl (purple).
My two sisters have always gotten the same gifts/items but different colors (one pink one purple) and their personality directly correlates with the color they chose.
Let me know what you guys think and post your findings