Hard Disk Monitoring

This is from a 32 GB USB flash drive. Am I safe to use this to store info given the strange color results?

This image is completely normal, generally for any flash based storage (SSD, pendrive, memory card).

Please check these topics for example:

https://www.hdsentinel.com/forum/viewtopic.php?p=19743
https://www.hdsentinel.com/forum/viewtopic.php?p=17002
https://www.hdsentinel.com/forum/viewtopic.php?p=21273

No need to worry, all blocks are green, this is the most important.