The concept is Mac and baby finger friendly keymap.
Colemak-DH: base layer. The option(⌥) and command(⌘) keys are assigned to thumb blocks as well as home position keys on each side. Also, far end two columns are assigned to shift(⇧) and control(⌃) keys.

| Tap | Double tap | Long tap |
|---|---|---|
| Command(⌘) | Command(⌘) + Space(␣) | |
| Delete(⌦) | Function layer | |
| Backspace(⌫) | Function layer | |
| Space(␣) | Code layer | |
| Enter(⏎) | Code layer |
| Tap | Double tap | Long tap |
|---|---|---|
| TAB | Control(⌃) + TAB | |
| a | Control(⌃) | |
| z | Shift(⇧) | |
| t | Option(⌥) | |
| n | Command(⌘) | |
| o | Control(⌃) | |
| ' | Control(⌃) | |
| / | Shift(⇧) | |
| = | Adjust layer |
QWERTY: same as Colemak-DH layer

| Tap | Double tap | Long tap |
|---|---|---|
| f | Option(⌥) | |
| j | Command(⌘) | |
| ; | Control(⌃) |
CODE: numbers and symbols.

| Tap | Double tap | Long tap |
|---|---|---|
| ESC | Caps lock |
| Tap | Double tap | Long tap |
|---|---|---|
| ` | Command(⌘) + ` |
FUNCTION: function, meadia and navigation keys

| Tap | Double tap | Long tap |
|---|---|---|
| ESC | Caps lock |
ADJUST: RGB control, Power control, default layer setting, QMK version and reset

SECRET: hold ADJUST and FUNCTION to activate
This keymap includes custom OLED font and code. The font contains some logos and status indidcators from gotham and soundmonster including my own CAPS LOCK icon. Enable OLED in rukes.mk to check it out. Feel free to reuse the font or parts of it.
Flash using make crkbd:thunderbird2086:avrdude for Pro Micro and make crkbd:thunderbird2086:dfu for Elite-C.