[teknopaul]

Open source licenses are licenses that comply with the Open Source Definition — in brief, they allow software to be freely used, modified, and shared.

https://opensource.org/licenses

[detaro]

And how do these apps not allow that?

[teknopaul]

Unnecessary restrictions on use such as changing the colour of the gui, is not within the general goals of Open source software.

[ffpip]

You can free to change the color of the GUI in the code and build it yourself. Change the values here to your liking - https://github.com/SimpleMobileTools/Simple-Commons/blob/mas... .