Looks normal and as for the white part(urates), that will change depending how much calcium was given vs how much was used and how much moisture your lizard has. For example a dehydrated and undernourished lizard would have small, dry, chalky urates where as a happy lizard will have normal size and moist urates.
It does look good and healthy. The urate should be bright white, a yellowish color could indicate too much calcium or dehydration. Its also a good amount a urates, your dragon is properly hydrated.