Oh, and the green ones with silver stripe are sometimes capacitors,
especially if they are a dad thicker than resistors. Commonly found in
smoke detectors.
1% resistors often have blue bodies, but odd body colors (white or
blue) sometimes imply fusible or flame proof resistors (that function
as a fuse and resistor in one package).
Green units are often inductors. If you suspect an inductor, measure
the resistance and see if it is close to what the bands code. If the
measured resistance is way less than the code, you probably have an
inductor.
They (the blue ones) are a pain in the ass to read. They
probably are the reason Ohm-meters were invented. The green
ones (as others have pointed out) may actually be inductors.