Version 1.1

• Changed resolution 720x1240 to 500x800 (for websites)
• Selected category is now highlighted
• Added animated background

So it turns out, the recommended size for phones is way too big for webGL ^^;

Color Palette?!?!?!
Banged my  head against the wall trying a whole bunch of different UI, color schemes and palettes. It was difficult balancing/matching... every possible colour. I wanted to have a coherent look AND give the player loads of customization power.

one row - three values

two rows - dark & light

Circle or square?

Based on @nyuemjam's advice, I tried increasing Hue & Value by fixed amounts while fixing saturation.
Here's the code to create the above palettes procedurally:

Selected Category???
This is what overthinking looks like. Save me. Took an hour to decide on the look & color of the selected category.