Here are some stage name suggestions for a male in his late 40s with blonde hair and blue eyes, aiming to overcome a "boring" persona:

Playing on Appearance:

• Blond Ambition: Classic, hints at drive and determination.
• Sky Blue: Simple, evocative of his eye color, suggests a calm yet profound nature.
• Golden Gaze: Sophisticated, emphasizes his blonde hair and captivating eyes.
• Sunny Shores: Evokes warmth and a relaxed, approachable vibe.
• Fairhaven: Suggests a gentle, trustworthy persona.

More Abstract & Evocative Names:

• Rhys Avalon: Mysterious and slightly mystical, Rhys is a strong Welsh name.
• Jasper Thorne: Classic and sophisticated, suggesting depth and experience.
• Leif Sinclair: Strong and memorable, Leif is a Scandinavian name.
• Damon Blackwood: Intriguing and slightly edgy, hints at a hidden depth.
• Caspian Grey: Mysterious and intriguing, evokes a sense of wisdom and calm.

Names Suggesting Transformation/New Beginning:

• Phoenix Rise: Powerful and symbolic of rebirth and transformation.
• Second Sunrise: Suggests a new chapter in life.
• New Dawn: Simple, yet powerful in its message of renewal.
• Evergreen: Suggests enduring strength and resilience.
• Reborn: Direct and impactful, highlighting a personal transformation.

Names with a hint of irony (playing on "boring"):

• The Maverick: A playful contrast to a perceived "boring" image.
• Unconventional: Directly addresses and subverts the expectation.
• The Unexpected: Similar to "Unconventional," but more mysterious.
• Wild Card: Suggests unpredictability and excitement.

Remember to check for trademark availability before settling on a name. Consider testing these names out on friends and colleagues to gauge their reactions and memorability.