Red feet/ bumblefoot?

Hi

I noticed one of my chinchillas back feet are quite red and i'm worried this may be the start of bumblefoot?

https://ibb.co/jWv1Cd
https://ibb.co/h19uXd

He's not in any pain and is hoping around and using his feet fine and theres no blood i'm just a bit worried.

The purple/darker areas are just blu-kote as i cleaned his feet then put on some bu-kote and bag balm yesterday

do you think his needs a vet visit or should i just keep cleaning/blu-kote/bag balm or am i worrying too much?

Thanks Guys :)