[LyX/master] Change preedit color settings

[横田 宏治]

> 2026/07/06 14:23、Jürgen Spitzmüller <jspitzm at gmail.com>のメール:
> 
> Am Montag, dem 06.07.2026 um 10:56 +0900 schrieb Koji Yokota:
>> It seems the default background color seems different between macOS
>> and Linux. It looks fine on Mac. Let me check with it.
> 
> Note that I've fixed it m,eanwhile.

Oh, thanks a lot! I was searching what was wrong :-)

Koji