Found it,

Accessibility setting did this (see attachment)

color_setting.png

Hi P,

The gray you're seeing is supposed to be white. No need to go to an optician. I don't know what is causing this, this is what I am and you should be seeing:
Screen Shot 2015-10-05 at 19.23.00.png

Is it a ...

Hi M,

Very strange idd. will do some setting resets here. I'm using a iPhone 6S, can't imagine this would be the problem however. I cannot send PM's for the moment, as it seems i need to participate more to use that option. You could drop me an e-mail however at pascal(at)dreissen(dot)nl

Thanks in ...

Hi,

Just bought this app last week and works just fine, however is it possible to change the colors of + - buttons (as in the attachment below). It is very hard to see the difference between + and -. If it is only me than i need to see an optician ;)

FullSizeRender.jpg

It would be very nice ...