try a simple diet consisting of loads of veggies, fruit and protein. Protein should come from lean sources such as fish, turkey and chicken. Red meat once or twice a week is fine. Veggies that are particularly good are cabbage, spinach, mushrooms, celery and onions. If the veggies are too bland, add them all to a pot, cover with boiling water and simmer for 10 minutes. Then with each meal have a huge serving of veggies and protein.
A delicious meal can comprise of a bowl of veggies (as soup) and chucked in chunks of fish or chicken, etc. I know this may not sound like your "typical" bodybuilding diet but believe me it does work to increase vascularity and drops body fat like crazy!