A few other minor comments after looking at things a bit more. Maybe these can help for a second run:
• The main letter keys font seems too big to me. Would prefer them about 75% of their current size).
• Font size on some keys seems inconsistent (e.g., GEAR DOWN, GEAR UP font seems bigger than PITCH, FLARE and some others)
• The arrow keys are not centered, so the up arrow glyph doesn't vertically align with the down arrow -- same for left vs. right)
• Some keys like +=, \|, '", /? are not vertically centered
• The blue seems more towards a purple to me - not quite what I expected from the renders
• The main letter keys font seems too big to me. Would prefer them about 75% of their current size). • Font size on some keys seems inconsistent (e.g., GEAR DOWN, GEAR UP font seems bigger than PITCH, FLARE and some others) • The arrow keys are not centered, so the up arrow glyph doesn't vertically align with the down arrow -- same for left vs. right) • Some keys like +=, \|, '", /? are not vertically centered • The blue seems more towards a purple to me - not quite what I expected from the renders