I tried calculating the actual probability that the whole image would be of the colour #0055FF
I took a sample of 20 images from the universal slideshow, and I got a program to count the number of pixels of a certain colour that were in the image. At first I wanted solid blue, but there was no solid blue in any of the images so I changed to counting #0055FF pixels. In the 20 images I put into the program, the number of #0055FF pixels ranged from 0 to 4. Each image has 266,240 total pixels. Using distribution techniques I learned in Core Maths, I got the standard deviation: 1.435270009, the mean: 1.8, and used the distribution function on my calculator to work out the probability of there being more than 266,238 of these pixels. My calculator only has a limited amount of accuracy though, so it came out as a big fat 0. Using an online distribution calculator, I found out that the probability of there just being 8 of these #0055FF pixels was 0.0000078.
TL;DR: what do you mean you didn't read it?? Go read it. Just kidding- the probability of there being 266,240 pixels of #0055FF colour is so insanely small, that every distribution calculator I used said it was 0 due to not being accurate enough.