Refactor for-loop iterations to use numeric indexing (Micro-Optimization)

[Vitroze]

Hello,
This PR aims to add a color cache and replace all ipairs statements with a for i = 1 loop.

I haven't tested it with other glide-compatible addons, but this one should work.

Sorry for StyledStrike.

[Vitroze]

I'll sort out the style issues this evening.

[Astralcircle]

I don't think it will speed up anything, LuaJIT handles this just fine

[Vitroze]

I don't think it will speed up anything, LuaJIT handles this just fine

However, according to another developer's benchmark, this changes.

Performance test over 100,000,000 iterations...
Digital loop: 0.5139 seconds
ipairs loop: 1.5544 seconds

10^1        | 0.00000001 s | 0.00000001 s | +8.14%
10^2        | 0.00000001 s | 0.00000001 s | +15.38%
10^3        | 0.00000523 s | 0.00001517 s | +190.13%
10^4        | 0.00005160 s | 0.00015319 s | +196.88%
10^5        | 0.00052010 s | 0.00152060 s | +192.37%
10^6        | 0.00513500 s | 0.01523100 s | +196.61%
10^7        | 0.05127500 s | 0.15289300 s | +198.18%
10^8        | 0.51848100 s | 1.54321600 s | +197.64%

In fact, this is interesting when the function is called several thousand times.

[bloodycop6385]

for i is quite faster lol

[Astralcircle]

for loop is faster only if you initially know the length of the table, and nothing will iterate through the table ~100 million times