Silkworms are actually good and can be used everyday aslong as you give hard bodied insects also. Mine hates silkworms. I've bought 3 pods the last 3 months and he's ate maybe 5 or 6
Mine was the same way after I put him in a bigger cage. It took a few weeks and another added nozzle before it started to get whiter. He could just be still getting used to his new cage