Green represents Qualcomm QC and purple represents Huawei express charging. Interfaces of other colors are not clearly defined. To be precise, there is no true or false, and there is no good or bad. Only support agreements and color preferences differ from brand to brand. With the rich charging technology solutions and the diversification of brands, simply using a specific color to define the fast charging performance of the charger is obviously not in line with the current trend.
The general charger jack is blue, which supports fast charging. The black one is the slow charging port with the normal charging speed.