Google is well known for its colourful logo. The current official Google logo was designed by Ruth Kedar, and is a wordmark based on the Catull typeface. wikipedia
The development of the Google algorithms was carried on on a variety of Computers, mainly provided by the NSF-DARPA-NASA-funded Digital Library project at Stanford. Click to see the equipment in its laboratory setting on the basement floor of Gates Information Sciences. Crawling the web to obtain its link structure required an enormous amount of storage in comparison with typical student projects at that time. We show here the original storage assembly, containing 10 4 Gigabyte disk drives, giving 40 Gbytes total.
You can also read the description of “Google Development” as described by the Newsletter of Stanford’s Office of Technology Licensing (OTL). In response to an interview (Sonia Zjawinski, Wired “How Google Got Its Colorful Logo“) Ruth Kedar, says “There were a lot of different color iterations, we ended up with the primary colors, but instead of having the pattern go in order, we put a secondary color on the L, which brought back the idea that Google doesn’t follow the rules.”
In an interesting explanation “Why Google used specific colours in their logo?” A discussion page at WikiAnswers cited- It might be that colors are assigned to letters according to whether their positions represent a prime number or don’t. Thus letters number 1, 2, 3 and 5 (all of them prime numbers) have a distinctive or “prime” color assigned: blue, red, yellow and green. Letters number 4 and 6 (not prime numbers) repeat colors -no longer “prime colors”- in the same order that such colors were assigned in the first time: blue and then red. If the sequence were to continue with new letters, the next letter, number 7, should have a new or “prime color” since 7 is prime; letters number 8, 9 and 10 should repeat colors in the pre established order: yellow, green and the same as 7’s; letter number 11, also a prime number, should have another new color, and so forth.
This discussion is also open at Quora.