What apps are there for customizing keyboard buttons and transparency?

[Purpur]

Are there any good or OK apps for customizing keyboard buttons and transparency?

A transparent keyboard would give me a lot of useful space, and with custom buttons the microphone can be reached with one click instead of two. There are other custom keys I would like to add as well, like one for CTRL+A and such.

(Fleksy is OK, but now I am thinking about making non-transparent keyboards transparent),

 

[Purpur]

Can this be used. What's your opinion on that, and are there easier ways?
Create A Custom Keyboard on Android - Tuts+ Code Tutorial

I would like a keyboard that I can switch two with just a click that is transparent, but otherwise it should look like the standard keyboard.

(Fleksy has this feature, but I would much rather have the standard keyboard in a transparent mode, since Fleksy is only beta in most other languages than English...)

 

[Purpur]

Looks like it is possible to adjust transparency in the new HTC theme customization for M9. In personalize, one can click on keyboard and keyboard color.

 

[google-play]

Thank you