Replace Vec4 Colorbuffer with Float

[thkruz]

User Story

• As a developer
• I want colors to be passed to the GPU as a single integer instead of a vec4
• So that far less resources are required for displaying color

Acceptance Criteria

• Given dots are drawn to the screen correctly
• When dotsManager.draw is called
• Then the color attribute will only require a single integer

Commentary

Currently every color is passed as a vec4 but it is almost always the same colors. Replacing these with integers that correspond to a uniform dictionary of colors would be way more efficient. This limits the ability to use gradient colors, but may be worth it for the performance gain.