Colors match when they should not

[jesshart]

First of all, incredible work here. A fantastic web app for learning Git.

It looks like colors may be randomly rendered for examples to distinguish one branch from another. However, sometimes the same color is rendered for different branches:

[pcottle]

Yeah there's a chance, I think I didn't handle the collision case. Open to reviewing a PR if you have any ideas though!

[AjayLiu]

I was trying to see if I could tinker with the color generation but it's crazy! Note to those who want to try this, the color generation is in src/visuals/index.js, not src/visuals/visBranch.js like I thought for a good 2 hours lol!

I saw this comment in the code and it gave me a good chuckle:

// crap! convert
var color = Raphael.color(fill);
fill = 'hsb(' + String(color.h) + ',' + String(color.l);
fill = fill + ',' + String(color.s) + ')';

I'm new to open source but I'd love to contribute to this project! I'm just a little confused since the colors get converted and blended so much lol