Successfully sunbathe myself into a gradient color

Quick answer：

This phrase suggests a unique experience where someone has unintentionally or intentionally achieved a gradient-like coloration on their skin due to sun exposure. This can be attributed to different levels of pigmentation or tan depth across different parts of the body. In some cases, it might be a desirable aesthetic outcome, while in others, it could be an unintended result of overexposure to the sun. Protecting oneself from excessive sun exposure is important to prevent sunburn and long-term skin damage.