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I understand that you are getting the pictures come with a pinkish color rather than the colors in the original picture.
Firstly, please make sure you only use genuine HP ZINK photo paper.
If using genuine HP ZINK photo paper did not resolve the issue, continue to the next step.
Charge the Sprocket:
Check the battery level using the HP sprocket app to determine if the battery needs to be charged. Turn on the Sprocket, and then open the HP sprocket app. Tap the Menu icon , and then tap sprocket. Tap Manage Printers, make sure your Sprocket is selected, and then tap Printer Settings. Under the Status section, locate Battery. If the battery charge is 50% or higher, continue to the next step. If the battery charge is 49% or lower, charge the battery for at least 60 minutes, and then continue to the next step.
Upgrade the Sprocket firmware:
HP regularly releases firmware updates. Upgrading the firmware might resolve the issue. Make sure the Sprocket is on and your mobile device is connected to the Internet. On your mobile device, open the HP sprocket app. Tap the Menu icon , and then tap sprocket. Tap Printer Settings, and then look for a firmware upgrade. If a firmware upgrade displays, tap Get Firmware Upgrade, and then follow the on-screen prompts to complete the update. If a firmware upgrade option does not display, the firmware is up-to-date.
After the firmware is updated, send a print job.
Let me know if that helps!
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