We're sorry to hear that the black ink on the dark blue pens did not turn out as expected. We’re glad to hear that you love the pen itself, but we understand the importance of having the print clearly visible. To address this issue, we will be reaching out to you via email to discuss how we can resolve it. Your satisfaction is important to us, and we want to ensure you’re happy with your order. Thank you for bringing this to our attention, and we appreciate your patience as we work to find a solution.