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Bacteria after Gram staining from the lab

Behold, a picture taken through a lightmicroscope of two bacteria tribes, cultivated on a petri dish; it was simply taken with the camera of my phone.

 Shown are two tribes of bacteria, and they can be visualized using the Gram staining. 
For the theory behind it and the protocol I'd like to reference to HERE.

 Basically on my picture:

 Red rod-shaped bacteria are bacilli: these are Gram NEGATIVE.
Purple spherical bacteria are cocci: these are Gram POSITIVE.

 You can further visualize the bacteria in terms of how they group up, with how many they group up, their specific form, do they attach to eachother, etc. and thus determine using references and literature what species they are from and what type of bacteria they are.



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