Color contrast issues

[AleksandrHovhannisyan]

Wonderful project! I'm hoping to include some of these embeds on my site, but I noticed a few additional color contrast issues:

1. The white on orange has a contrast ratio of 3.93:

2. The two global stats have contrast ratios of 2.19 and 1.73, respectively:

Related to that second issue is the fact that the global stats use the same colors as the tiles in the inaccessible color mode, so when the accessible color mode is enabled, there's a mismatch between the tile colors and the stat colors.

Some proposed colors that might work well:

#c34e03 for the orange footer (4.76):

Black for the global stats (this would also require labeling the two percentages to clarify what they correspond to).