system
Given the following post, respond as if you're commenting on Reddit:
human
[Tron] What determines the color and pattern of a program's glowing bits?

MCP and CLU's forces do tend to be red or orange, Tron was blue, Flynn, Quora, Sam were white, but so were Gem and Zeus.  
Do the patterns and colors have any significance, or are they just aesthetic?
gpt
Coding style, primarily.  You'll find that programmers tend to create programs all in the same color.  When a program's code is altered, the color changes to match the programming style of the programmer ultimately responsible for the change in code.  It's not function, it's not just the user log... note that many programs share the same color even when we know for certain they had different users... and we've seen Flynn write programs in more than one color, but coding style seems to fit.  

Different programmers at the corporation are likely following the same style guide, so their code comes out in the same color.  A programmer whose style shifts over time due to experience or preference will find their programs changing color as well.

I mean, we may not know for certain, but it looks quite likely to me.  Indentation, comma space, use of loops vs recursion, little or big endian, 32 vs 64 bit compiler use, makefile build flags, shared libraries, use of header files... all these sorts of things combine into a unique coding style that can at once be shared between different programmers, or unique between different programmers, or even change over time with a single programmer.