All boxes are outside (LxWxH) 272mm x 180 mm x 40 mm in size. (Overall)
Inside the uniform depth 35 mm, the rest is different.
Blue: 2x (254x38); 2x (126x38 with cut-out for grip); 3x (83x38).
Red: 1x (254x50); 1x (118x50); 1x (72x50); 2x (35x50); 2x (35x100); 2x (53x40 with cutout for grip).
Yellow: 4x (62x35); 6x (126x35), two of them with cut-out for grip.
Green: 1x (254x50); 3x (126x50) with recess for a grip; 2x (62x50) with a recess for the recessed grip.
All boxes have right and left a small hole in the lid edge.
The meaning is not clear to me - but you could thus secure the lid, for example, additionally with cable ties.
Conclusion: For me, the ideal choice for a reasonable price (2.95; 3/2014).
The only complaint is that the interior layout is linked to the color. If all types would be available in all colors, the color of the boxes could be used as an additional organizing principle, which creates an even better overview.