What are the best methods for achieving a textured or patterned finish on a bike frame, and what are the key considerations for ensuring a durable and long-lasting result? Ive seen some amazing examples of custom finishes online, from subtle brushed metal effects to bold, eye-catching designs, and Im keen to learn more about the techniques and materials involved. Are there any specific paints, coatings, or application methods that are particularly well-suited to creating textured or patterned finishes, and what kind of prep work is required to ensure a strong bond between the finish and the frame? Additionally, are there any specific considerations for maintaining and protecting a textured or patterned finish over time?