DCS is very similar to OEM, but a little shorter:
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(http://virtualverbal.com/wp-content/uploads/2017/04/Macam-Macam-Profile-Keycaps-Mechanical-Keyboard-02.jpg)
You could replace the entire keycap set with DCS and not really notice much difference, but you can't mix and match them seamlessly.
well if only the right shift and right alt and fn keys were standard size , but they arent , normally these are 1.25 units wide but in this keyboard the drevo gramr they are 1 unit wide :/ , the difference indeed seems pretty small , i could use any keys from the numpad (as the drevo doesnt have one ) to fill the previously mentioned keys , but i think i could live with the rest of keys (the non-alpharithmetic keys) being a little bit higher :D , plus orange with black would be pretty sweet looking , but ill see if it bothers me a lot. Thanks!